id sid tid token lemma pos df65v69608r 1 1 nucleosynthesis nucleosynthesis NOUN df65v69608r 1 2 by by ADP df65v69608r 1 3 rapid rapid ADJ df65v69608r 1 4 neutron neutron NOUN df65v69608r 1 5 capture capture NOUN df65v69608r 1 6 --- --- PUNCT df65v69608r 1 7 the the DET df65v69608r 1 8 r r NOUN df65v69608r 1 9 - - PUNCT df65v69608r 1 10 process process NOUN df65v69608r 1 11 --- --- PUNCT df65v69608r 1 12 accounts account NOUN df65v69608r 1 13 for for ADP df65v69608r 1 14 the the DET df65v69608r 1 15 production production NOUN df65v69608r 1 16 of of ADP df65v69608r 1 17 roughly roughly ADV df65v69608r 1 18 half half NOUN df65v69608r 1 19 of of ADP df65v69608r 1 20 the the DET df65v69608r 1 21 heavy heavy ADJ df65v69608r 1 22 elements element NOUN df65v69608r 1 23 in in ADP df65v69608r 1 24 the the DET df65v69608r 1 25 solar solar ADJ df65v69608r 1 26 system system NOUN df65v69608r 1 27 . . PUNCT df65v69608r 2 1 not not PART df65v69608r 2 2 only only ADV df65v69608r 2 3 are be AUX df65v69608r 2 4 these these DET df65v69608r 2 5 heavy heavy ADJ df65v69608r 2 6 elements element NOUN df65v69608r 2 7 found find VERB df65v69608r 2 8 locally locally ADV df65v69608r 2 9 , , PUNCT df65v69608r 2 10 but but CCONJ df65v69608r 2 11 they they PRON df65v69608r 2 12 are be AUX df65v69608r 2 13 also also ADV df65v69608r 2 14 found find VERB df65v69608r 2 15 in in ADP df65v69608r 2 16 very very ADV df65v69608r 2 17 old old ADJ df65v69608r 2 18 , , PUNCT df65v69608r 2 19 chemically chemically ADV df65v69608r 2 20 simple simple ADJ df65v69608r 2 21 stars star NOUN df65v69608r 2 22 , , PUNCT df65v69608r 2 23 providing provide VERB df65v69608r 2 24 evidence evidence NOUN df65v69608r 2 25 that that SCONJ df65v69608r 2 26 this this DET df65v69608r 2 27 process process NOUN df65v69608r 2 28 must must AUX df65v69608r 2 29 occur occur VERB df65v69608r 2 30 astrophysically astrophysically ADV df65v69608r 2 31 . . PUNCT df65v69608r 3 1 yet yet ADV df65v69608r 3 2 the the DET df65v69608r 3 3 exact exact ADJ df65v69608r 3 4 environment environment NOUN df65v69608r 3 5 that that PRON df65v69608r 3 6 made make VERB df65v69608r 3 7 the the DET df65v69608r 3 8 heavy heavy ADJ df65v69608r 3 9 elements element NOUN df65v69608r 3 10 is be AUX df65v69608r 3 11 unknown unknown ADJ df65v69608r 3 12 . . PUNCT df65v69608r 4 1 through through ADP df65v69608r 4 2 the the DET df65v69608r 4 3 combination combination NOUN df65v69608r 4 4 of of ADP df65v69608r 4 5 r r NOUN df65v69608r 4 6 - - PUNCT df65v69608r 4 7 process process NOUN df65v69608r 4 8 network network NOUN df65v69608r 4 9 calculations calculation NOUN df65v69608r 4 10 and and CCONJ df65v69608r 4 11 observational observational ADJ df65v69608r 4 12 signatures signature NOUN df65v69608r 4 13 of of ADP df65v69608r 4 14 r r NOUN df65v69608r 4 15 - - PUNCT df65v69608r 4 16 process process NOUN df65v69608r 4 17 events event NOUN df65v69608r 4 18 , , PUNCT df65v69608r 4 19 i i PRON df65v69608r 4 20 utilize utilize VERB df65v69608r 4 21 actinide actinide ADJ df65v69608r 4 22 production production NOUN df65v69608r 4 23 by by ADP df65v69608r 4 24 the the DET df65v69608r 4 25 r r NOUN df65v69608r 4 26 - - PUNCT df65v69608r 4 27 process process NOUN df65v69608r 4 28 to to PART df65v69608r 4 29 investigate investigate VERB df65v69608r 4 30 questions question NOUN df65v69608r 4 31 regarding regard VERB df65v69608r 4 32 the the DET df65v69608r 4 33 source source NOUN df65v69608r 4 34 of of ADP df65v69608r 4 35 heavy heavy ADJ df65v69608r 4 36 - - PUNCT df65v69608r 4 37 element element NOUN df65v69608r 4 38 abundance abundance NOUN df65v69608r 4 39 variations variation NOUN df65v69608r 4 40 in in ADP df65v69608r 4 41 metal metal NOUN df65v69608r 4 42 - - PUNCT df65v69608r 4 43 poor poor ADJ df65v69608r 4 44 stars star NOUN df65v69608r 4 45 , , PUNCT df65v69608r 4 46 the the DET df65v69608r 4 47 effect effect NOUN df65v69608r 4 48 of of ADP df65v69608r 4 49 fission fission NOUN df65v69608r 4 50 cycling cycling NOUN df65v69608r 4 51 on on ADP df65v69608r 4 52 the the DET df65v69608r 4 53 r r NOUN df65v69608r 4 54 - - PUNCT df65v69608r 4 55 process process NOUN df65v69608r 4 56 abundance abundance NOUN df65v69608r 4 57 pattern pattern NOUN df65v69608r 4 58 , , PUNCT df65v69608r 4 59 limits limit NOUN df65v69608r 4 60 on on ADP df65v69608r 4 61 r r NOUN df65v69608r 4 62 - - PUNCT df65v69608r 4 63 process process NOUN df65v69608r 4 64 ejecta ejecta NOUN df65v69608r 4 65 by by ADP df65v69608r 4 66 candidate candidate NOUN df65v69608r 4 67 sites site NOUN df65v69608r 4 68 , , PUNCT df65v69608r 4 69 and and CCONJ df65v69608r 4 70 constraints constraint NOUN df65v69608r 4 71 on on ADP df65v69608r 4 72 primordial primordial ADJ df65v69608r 4 73 neutron neutron NOUN df65v69608r 4 74 star star PROPN df65v69608r 4 75 binary binary ADJ df65v69608r 4 76 systems system NOUN df65v69608r 4 77 . . PUNCT df65v69608r 5 1 i i PRON df65v69608r 5 2 find find VERB df65v69608r 5 3 that that SCONJ df65v69608r 5 4 neutron neutron PROPN df65v69608r 5 5 star star PROPN df65v69608r 5 6 mergers merger NOUN df65v69608r 5 7 have have VERB df65v69608r 5 8 the the DET df65v69608r 5 9 potential potential NOUN df65v69608r 5 10 to to PART df65v69608r 5 11 synthesize synthesize VERB df65v69608r 5 12 all all DET df65v69608r 5 13 observed observe VERB df65v69608r 5 14 levels level NOUN df65v69608r 5 15 of of ADP df65v69608r 5 16 actinide actinide ADJ df65v69608r 5 17 abundances abundance NOUN df65v69608r 5 18 measured measure VERB df65v69608r 5 19 in in ADP df65v69608r 5 20 metal metal NOUN df65v69608r 5 21 - - PUNCT df65v69608r 5 22 poor poor ADJ df65v69608r 5 23 stars star NOUN df65v69608r 5 24 if if SCONJ df65v69608r 5 25 astrophysical astrophysical ADJ df65v69608r 5 26 variations variation NOUN df65v69608r 5 27 on on ADP df65v69608r 5 28 the the DET df65v69608r 5 29 composition composition NOUN df65v69608r 5 30 of of ADP df65v69608r 5 31 the the DET df65v69608r 5 32 ejecta ejecta NOUN df65v69608r 5 33 are be AUX df65v69608r 5 34 allowed allow VERB df65v69608r 5 35 within within ADP df65v69608r 5 36 the the DET df65v69608r 5 37 merger merger NOUN df65v69608r 5 38 site site NOUN df65v69608r 5 39 . . PUNCT df65v69608r 6 1 using use VERB df65v69608r 6 2 this this DET df65v69608r 6 3 principle principle NOUN df65v69608r 6 4 , , PUNCT df65v69608r 6 5 i i PRON df65v69608r 6 6 then then ADV df65v69608r 6 7 determine determine VERB df65v69608r 6 8 that that SCONJ df65v69608r 6 9 if if SCONJ df65v69608r 6 10 neutron neutron PROPN df65v69608r 6 11 star star PROPN df65v69608r 6 12 mergers mergers PROPN df65v69608r 6 13 produced produce VERB df65v69608r 6 14 the the DET df65v69608r 6 15 majority majority NOUN df65v69608r 6 16 of of ADP df65v69608r 6 17 r r NOUN df65v69608r 6 18 - - PUNCT df65v69608r 6 19 process process NOUN df65v69608r 6 20 elements element NOUN df65v69608r 6 21 in in ADP df65v69608r 6 22 the the DET df65v69608r 6 23 galaxy galaxy NOUN df65v69608r 6 24 , , PUNCT df65v69608r 6 25 then then ADV df65v69608r 6 26 the the DET df65v69608r 6 27 first first ADJ df65v69608r 6 28 mergers merger NOUN df65v69608r 6 29 were be AUX df65v69608r 6 30 primarily primarily ADV df65v69608r 6 31 mass mass ADJ df65v69608r 6 32 - - PUNCT df65v69608r 6 33 asymmetric asymmetric NOUN df65v69608r 6 34 . . PUNCT df65v69608r 7 1 this this DET df65v69608r 7 2 thesis thesis NOUN df65v69608r 7 3 demonstrates demonstrate VERB df65v69608r 7 4 a a DET df65v69608r 7 5 unique unique ADJ df65v69608r 7 6 and and CCONJ df65v69608r 7 7 adaptable adaptable ADJ df65v69608r 7 8 route route NOUN df65v69608r 7 9 by by ADP df65v69608r 7 10 which which PRON df65v69608r 7 11 the the DET df65v69608r 7 12 elemental elemental ADJ df65v69608r 7 13 signatures signature NOUN df65v69608r 7 14 of of ADP df65v69608r 7 15 metal metal NOUN df65v69608r 7 16 - - PUNCT df65v69608r 7 17 poor poor ADJ df65v69608r 7 18 stars star NOUN df65v69608r 7 19 can can AUX df65v69608r 7 20 disentangle disentangle VERB df65v69608r 7 21 the the DET df65v69608r 7 22 complex complex ADJ df65v69608r 7 23 chemical chemical NOUN df65v69608r 7 24 - - PUNCT df65v69608r 7 25 enrichment enrichment NOUN df65v69608r 7 26 history history NOUN df65v69608r 7 27 of of ADP df65v69608r 7 28 the the DET df65v69608r 7 29 universe universe NOUN df65v69608r 7 30 . . PUNCT