Assertion: drainage basin's tributary | /r/HasProperty | the nan river
Facets:
Source sentences:
text: The principal tributaries of the Chao Phraya River are the Pa Sak River, the Sakae Krang River, the Nan River (along with its principal confluent the Yom River), the Ping River (with its principal confluent, the Wang River), and the Tha Chin River.