Assertion: naphtha's compound | /r/HasProperty | olefin
Facets:
Source sentences:
text: In general, naphtha may be prepared by any one of several methods, which include: (1) fractionation of straight-run, cracked, and reforming distillates, or even fractionation of crude petroleum; (2) solvent extraction; (3) hydrogenation of cracked distillates; (4) polymerization of unsaturated compounds (olefins); and (5) alkylation processes.
text: The resulting product streams are separated and purified, leaving valuable compounds called “olefins”: