Instruct: Retrieve semantically similar text.
Query: The Takahashi River (高梁川 , Takahashi-gawa ) is a Class A major river in the western part of Okayama Prefecture. It acts as the main drainage for the Takahashi River Drainage System, and is one of the three main drainage rivers in Okayama Prefecture (the others being the Yoshii River and the Asahi River).
The Takahashi River serves as a major drainage river.
The Drainage System is comprised of 2 rivers.
The situation is fluid
Sierpe River is a navigable river
Rivers have banks.
Yoshii River is a major drainage river.
There are 4 main drainage rivers.
The river is not a part of the drainage system.
a decision has been made on the subject
There is a decision that must be made
There is ownership.
the water has to be flowing
The river is a minor river.
The Takahashi River is not a tributary to another river.
Sometimes there can be a large amount of water flow.
There is an act.
The matter is important. 
The text is primarily talking about a lake.
The Oldman River is a body of water.
The dam is efficient
There is some action goings on.
The Oldman River is a body of water
The river is the only drainage river in the Okayama Prefecture.
There are 4 main drainage rivers.
The Takahashi River is not a tributary to another river.