Assertion: nylon | /r/ObjectUse | used a nylon zipper
Facets:
value: formerly
type: TEMPORAL
Source sentences:
text: Nylon was formerly used and though only polyester is used now [ citation needed ] , the type is still also termed a nylon zipper.
text: Nylon was formerly used and though only polyester is used now , the type is still also termed a nylon zipper.