Assertion: forest's area | /r/HasProperty | declared the cumberland national forest
Facets:
value: officially
type: MANNER
value: by the time
type: TEMPORAL
value: in 1937
type: TEMPORAL
Source sentences:
text: By the time the area was officially declared the Cumberland National Forest in 1937, the tract spanned 409,567 acres (165,746 ha) of federally owned land across 16 Kentucky counties.