Assertion: carousel | /r/HasProperty | powered by steam
Facets:
value: originally
type: OTHER
value: in the 1860s
type: TEMPORAL
Source sentences:
text: Carousels remained small until they began to be powered by steam in the 1860s.
text: Although originally powered by steam, the carousel was converted to electricity in 1900, and is powered by a 10-horsepower motor located in the building's basement.