Assertion: rock | /r/CapableOf | range to 1980
Facets:
value: from the mid-1960s
type: TEMPORAL
value: generally
type: DEGREE
Source sentences:
text: In the United States, the classic rock format features rock music ranging generally from the mid-1960s to the 1980s, primarily focusing on commercially successful blues rock and hard rock popularized in the 1970s AOR format.