context: There is a better than even chance that Bernhard is a swan. Chances are about even that Greg is a lion. It is highly likely that Julius is a frog. It is almost certain that if Bernhard is a swan, and Julius is a frog, then John moved to the office. There is almost no chance that if either Greg is a lion, or Julius is a frog, then Fred went to the bedroom. Chances are slight that if Greg is a lion, or Bernhard is a swan, then Mary dropped the apple.
hypothesis: There is little chance that julius is a frog, or Mary dropped the apple.
valid_hypothesis: It is highly likely that julius is a frog, or Mary dropped the apple.
invalid_hypothesis: There is little chance that julius is a frog, or Mary dropped the apple.
hypothesis_assertion: Julius is a frog, or Mary dropped the apple.