Assertion: roller coaster | /r/HasProperty | possible
Facets:
value: because of gravity
type: CAUSE
value: the force that pulls
type: OTHER
Source sentences:
text: Roller coasters are possible because of gravity, the force that pulls objects toward the earth.
text: In every year, roller coasters are getting a lot scarier and way much more terrifying and it could be possible for roller coasters to get stuck up there but