context: Chances are about even that Julius is a frog. It is highly unlikely that Mary went to the hallway. It is almost certain that Greg is a swan. It is improbable that if Greg is a swan, and Julius is a frog, then Daniel left the milk. There is a better than even chance that if Julius is a frog, or Mary went to the hallway, then Lily is gray. There is a better than even chance that if Julius is a frog, and Mary went to the hallway, then John discarded the milk.
hypothesis: It is almost certain that greg is a swan, or Lily is gray.
valid_hypothesis: It is almost certain that greg is a swan, or Lily is gray.
invalid_hypothesis: There is little chance that greg is a swan, or Lily is gray.
hypothesis_assertion: Greg is a swan, or Lily is gray.