Assertion: rock | /r/CapableOf | come in early 1950s
Facets:
value: from u.s.
type: LOCATION
value: from both the u.k.
type: LOCATION
Source sentences:
text: In terms of cultural birthplaces, blues sprouted from the southern regions of the U.S. during the late 19th century whereas rock came from both the U.K. and U.S. in early 1950s.