Assertion: tennis racket | /r/MadeOf | wood
Facets:
value: with leather grips
type: OTHER
value: from 1874
type: TEMPORAL
Source sentences:
text: From 1874 to 1967, tennis racquets were made of wood and did not change very much in design, though their construction improved dramatically.
text: Until the 1970's virtually all tennis racquets were made of wood with leather grips.