context: It is almost certain that Brian is a swan. We doubt that Bernhard is a frog. There is little chance that Mary went to the office. It is impossible that if Brian is a swan, and Mary went to the office, then Julius is white. It is almost certain that if Mary went to the office, or Bernhard is a frog, then Winona is a mouse. It is impossible that if either Bernhard is a frog, or Mary went to the office, then Daniel put down the milk.
hypothesis: Chances are slight that either Winona is a mouse, or Brian is a swan.
valid_hypothesis: It is likely that either Winona is a mouse, or Brian is a swan.
invalid_hypothesis: Chances are slight that either Winona is a mouse, or Brian is a swan.
hypothesis_assertion: Either Winona is a mouse, or Brian is a swan.