Assertion: hip hop's style | /r/HasProperty | introduced over radio airwaves
Facets:
value: by 1950s
type: TEMPORAL
value: by the late 1940s
type: TEMPORAL
value: by two chicago disc jockeys
type: OTHER
Source sentences:
text: By the late 1940s and 1950s this urban style of speaking was introduced over radio airwaves by two Chicago disc jockeys, Holmes "Daddy-O" Daylie and Al Benson, who utilized jive in rhyme over music.