Assertion: standard squash racket | /r/HasProperty | made of composite materials
Facets:
value: with synthetic strings
type: OTHER
value: almost always
type: TEMPORAL
Source sentences:
text: After a rule change in the mid-1980s, they are now almost always made of composite materials such as carbon fiber or metals (graphite, Kevlar, titanium, and/or boron) with synthetic strings.