Assertion: rock | /r/HasProperty | recognized as important milestone
Facets:
value: generally
type: MANNER
Source sentences:
text: In terms of its wide cultural impact across society in the US and elsewhere, Bill Haley's "Rock Around the Clock", recorded in April 1954 but not a commercial success until the following year, is generally recognized as an important milestone, but it was preceded by many recordings from earlier decades in which elements of rock and roll can be clearly discerned.