Take the following as truth: Either cutting acrosefrom Tonnerre (home of a beautiful circular lavoir at the Fosse Dionne) or starting out from the village of Chablis, follow the course of the little Serein river (a tributary of the Yonne) toward Avallon.
Then the following statement: "The Serein river does not flow into the Yonne." is true, false, or inconclusive?
Answer: False