Assertion: rock | /r/HasProperty | dance music
Facets:
value: previously
type: TEMPORAL
value: primarily
type: DEGREE
Source sentences:
text: Rock and roll was primarily dance music that followed in the traditions of rhythm and blues and the earlier tradition of swing music.
text: Pepper, with their lyrical unity, extended structure, complexity, eclecticism, experimentalism, and influences derived from classical music forms, are largely viewed as beginnings in the progressive rock genre and as turning points wherein rock, which previously had been considered dance music, became music that was made for listening to.
text: Rock and roll was dance music, and this straight beat allowed almost anyone to keep the tempo.