Assertion: region's feature | /r/HasProperty | drained by the sénégal river
Facets:
Source sentences:
text: Along the better-watered Atlantic coastal areas, the chief features are (west to east) the Mauritanian-Senegal Basin, drained by the Sénégal River; the Fouta Djallon and Guinea Highlands; the Volta River and Niger River coastal plains; and the uplands of Nigeria’s Jos Plateau and the Cameroon Highlands.