context: It is highly unlikely that Lily is a lion. It is improbable that Julius is yellow. We believe that Greg is a swan. It is unlikely that if Greg is a swan, and Julius is yellow, then Mary went to the office. It is highly likely that if Greg is a swan, or Julius is yellow, then Brian is a rhino. There is almost no chance that if Greg is a swan, or Lily is a lion, then John picked up the apple.
hypothesis: There is little chance that lily is a lion, or Greg is a swan.
valid_hypothesis: We believe that lily is a lion, or Greg is a swan.
invalid_hypothesis: There is little chance that lily is a lion, or Greg is a swan.
hypothesis_assertion: Lily is a lion, or Greg is a swan.