Assertion: shaped ski | /r/HasProperty | unheard
Facets:
value: until the early 1990s
type: TEMPORAL
value: almost
type: DEGREE
Source sentences:
text: Shaped skis were almost unheard of until the early 1990s, when skiers began noticing certain advantages to the deeper sidecuts of snowboards, especially alpine snowboards, and the carving ability that this shape offered over the traditionally-shaped ski.