Assertion: country music's song | /r/CapableOf | become popular
Facets:
value: in the united states
type: LOCATION
value: wildly
type: DEGREE
Source sentences:
text: The war was an impetus for the creation of distinctly American songs that became and remained wildly popular.
text: Songs that became popular in the United States and are heard during the Holiday/Christmas season are "¿Dónde Está Santa Claus?