Assertion: club | /r/CapableOf | serve as the springboard
Facets:
value: for cab calloway
type: TRANSITIVE-OBJECT
value: to fame
type: OTHER
value: for many others
type: TRANSITIVE-OBJECT
value: for duke ellington
type: TRANSITIVE-OBJECT
Source sentences:
text: The club served as the springboard to fame for Duke Ellington, Cab Calloway, and many others.