context: It is highly likely that Julius is a lion. It is likely that Brian is a rhino. It is improbable that Bernhard is white. It is likely that if Bernhard is white, or Brian is a rhino, then Mary went to the kitchen. Chances are about even that if either Julius is a lion, or Brian is a rhino, then John moved to the office. It is unlikely that if Bernhard is white, and Brian is a rhino, then Antoine is thirsty.
hypothesis: There is a very good chance that brian is a rhino, or John moved to the office.
valid_hypothesis: There is a very good chance that brian is a rhino, or John moved to the office.
invalid_hypothesis: Chances are slight that brian is a rhino, or John moved to the office.
hypothesis_assertion: Brian is a rhino, or John moved to the office.