Assertion: nylon | /r/HasProperty | developed in 1930
Facets:
value: as an alternative to silk
type: PURPOSE
value: by a research team
type: OTHER
Source sentences:
text: Nylons were developed in the 1930s by a research team headed by an American chemist, Wallace H. Carothers, working for E.I. du Pont de Nemours & Company.
text: It was developed in the 1930s as an alternative to silk, although it quickly became unavailable to civilian consumers, because it was used extensively during World War II.