Assertion: panhandle's area | /r/CapableOf | prove to be barrier
Facets:
value: to the east
type: LOCATION
value: to west
type: LOCATION
Source sentences:
text: Early travelers through north Texas coined the name "Cross Timbers" by their repeated crossings of these timbered areas that proved to be a barrier to their travel on the open prairies to the east and west.