context: Chances are about even that Lily is a lion. It is improbable that Daniel took the football. There is little chance that Brian is a swan. Chances are slight that if Daniel took the football, or Lily is a lion, then Emily is a wolf. It is probably not the case that if Lily is a lion, and Brian is a swan, then Greg is gray. It is highly likely that if Lily is a lion, or Brian is a swan, then Mary went to the office.
hypothesis: It is improbable that lily is a lion, or Brian is a swan.
valid_hypothesis: There is a better than even chance that lily is a lion, or Brian is a swan.
invalid_hypothesis: It is improbable that lily is a lion, or Brian is a swan.
hypothesis_assertion: Lily is a lion, or Brian is a swan.