Assertion: river | /r/HasAspect | five tributaries
Facets:
Source sentences:
text: The river has five tributaries: Green Lanes Stream, Ewell Court Stream, Horton Stream, Bonesgate Stream and Tolworth Brook, as well as Hogsmill Stream, the main spring of the river just outside Bourne Hall Park in Ewell.
text: Most rivers have numerous tributaries and change names often; it is customary to regard the longest tributary or stem as the source, regardless of what name that watercourse may carry on local maps and in local usage.[citation needed]