Assertion: singer | /r/CapableOf | take on defined roles
Facets:
value: clearly
type: MANNER
value: by the 1950s
type: TEMPORAL
value: as lead singers
type: MANNER
Source sentences:
text: By the 1950s, singers such as Sam Cooke (with the Soul Stirrers) and Clyde McPhatter (with the Drifters) took on more clearly defined roles as lead singers, and by the end of the decade credited group names often changed to reflect the leading roles of the main vocalists, with examples such as Frankie Lymon & the Teenagers and Dion & the Belmonts.