context: There is little chance that Mary went to the office. It is impossible that Brian is a frog. We believe that John moved to the garden. Chances are slight that if Brian is a frog, and Mary went to the office, then Daniel grabbed the apple. There is a very good chance that if either Mary went to the office, or John moved to the garden, then Greg is a rhino. Chances are slight that if John moved to the garden, or Mary went to the office, then Bernhard is white.
hypothesis: We believe that bernhard is white, or Brian is a frog.
valid_hypothesis: There is little chance that bernhard is white, or Brian is a frog.
invalid_hypothesis: We believe that bernhard is white, or Brian is a frog.
hypothesis_assertion: Bernhard is white, or Brian is a frog.