Assertion: skate's wheel | /r/HasProperty | ineffective
Facets:
value: by road bumps
type: OTHER
value: generally
type: DEGREE
Source sentences:
text: Many skates manufactured in the 1980s and 1990s had plastic wheels, which were ineffective and cracked easily.
text: Harder wheels are not necessarily faster but tend to be more durable; soft wheels may have better grip and are generally less affected by road bumps.