Assertion: organ trio | /r/HasProperty | popular type of jazz ensemble
Facets:
value: in the 1950s
type: TEMPORAL
value: in 1960s
type: TEMPORAL
Source sentences:
text: Organ trios were a popular type of jazz ensemble for club and bar settings in the 1950s and 1960s, performing a blues-based style of jazz that incorporated elements of R&B.