Assertion: steel roller coaster | /r/CapableOf | turn rider
Facets:
value: upside down
type: MANNER
value: in the 20th century
type: TEMPORAL
value: recently
type: TEMPORAL
Source sentences:
text: Until recently only steel roller coasters can turn riders upside down.
text: In the 20th century only steel roller coasters could turn riders upside down.