Assertion: drainage basin's tributary | /r/CapableOf | form the border
Facets:
value: between brazil
type: LOCATION
value: between congo
type: LOCATION
value: between peru
type: LOCATION
value: between zaire
type: LOCATION
Source sentences:
text: The Oubangui tributary forms the border between Congo and Zaire, then flows into the Congo/Zaire River which continues to be the border until the far south-west where it enters Zaire.
text: The Javari, a tributary of the Amazon river that forms the border between Peru and Brazil.