Assertion: urban area's population | /r/HasProperty | rural
Facets:
value: primarily
type: DEGREE
value: prior to the 20th century
type: TEMPORAL
Source sentences:
text: Prior to the 20th century, the African American population was primarily rural.
text: One emerging trend since at least the 1990s is the "floating population" or "black (e.g. black market) people", rural migrants (民工 min gong) entering urban areas in search of work.