context: It is probable that Lily is a frog. We doubt that John dropped the apple. It is unlikely that Bernhard is a lion. There is little chance that if John dropped the apple, and Bernhard is a lion, then Mary went to the kitchen. It is highly unlikely that if Bernhard is a lion, and John dropped the apple, then Brian is gray. It is likely that if either Lily is a frog, or John dropped the apple, then Winona is a wolf.
hypothesis: There is little chance that either Mary went to the kitchen, or Lily is a frog.
valid_hypothesis: It is likely that either Mary went to the kitchen, or Lily is a frog.
invalid_hypothesis: There is little chance that either Mary went to the kitchen, or Lily is a frog.
hypothesis_assertion: Either Mary went to the kitchen, or Lily is a frog.