Assertion: pop music | /r/HasProperty | term
Facets:
Source sentences:
text: Pop music (a term that originally derives from an abbreviation of "popular") is a genre of popular music, which originated in its modern form in the 1950s, deriving from rock and roll.
text: Pop music (a term that derives from "popular") is a genre of popular music that originated in its modern form in the Western world during the 1950s and 1960s, deriving from rock and roll.
text: Pop music is a term that "from the late 1950s has been applied to the central and most widely circulated kinds of popular music", such as rock and roll and its related forms.