Assertion: swing | /r/HasAspect | its roots
Facets:
value: in baseball
type: LOCATION
value: in 1920s
type: TEMPORAL
Source sentences:
text: Swing has its roots in 1920s dance music ensembles which began using new styles of written arrangements, incorporating rhythmic innovations pioneered by Louis Armstrong and Earl Hines.
text: The term "swing for the fences" has its origins in baseball.