Assertion: rock | /r/HasProperty | black invention
Facets:
value: in an age
type: TEMPORAL
value: clearly
type: MANNER
Source sentences:
text: a political force (the USA was coming out of Joseph McCarthy's "witch hunt" but unruly behavior was easily suspected of communism), a religious force (rock'n'roll, with its obvious references to sex, wasn't exactly the kind of music that church-goers desired for their children), and a racial force (rock'n'roll was clearly a black invention, in an age that was still obsessed with racial separation).