Assertion: sign language's system | /r/CapableOf | exist as a lingua franca
Facets:
Source sentences:
text: In Native American communities prior to 1492, for instance, it seems one or more signed systems existed as a lingua franca which neighboring tribes used to communicate with one another Native American communities believed people born deaf were physically and mentally capable, while people in Europe, starting with the urging of Pedro Ponce de León, would not begin to believe so until the late 16th century.