context: We doubt that Sandra grabbed the apple. We doubt that Jessica is a wolf. It is likely that Lily is green. We believe that if Jessica is a wolf, and Sandra grabbed the apple, then Julius is a swan. There is little chance that if Jessica is a wolf, or Sandra grabbed the apple, then Greg is a frog. Chances are about even that if either Jessica is a wolf, or Lily is green, then Mary went to the garden.
hypothesis: We believe that greg is a frog, or Mary went to the garden.
valid_hypothesis: It is probably not the case that greg is a frog, or Mary went to the garden.
invalid_hypothesis: We believe that greg is a frog, or Mary went to the garden.
hypothesis_assertion: Greg is a frog, or Mary went to the garden.