context: It is probably the case that John went to the kitchen. It is probably not the case that Sandra left the apple. It is almost certain that Brian is green. It is almost certain that if John went to the kitchen, and Brian is green, then Bill is in the school. It is almost certain that if Brian is green, and John went to the kitchen, then Lily is a frog. It is probably the case that if either John went to the kitchen, or Sandra left the apple, then Greg is gray.
hypothesis: There is a better than even chance that either John went to the kitchen, or Lily is a frog.
valid_hypothesis: It is highly unlikely that either John went to the kitchen, or Lily is a frog.
invalid_hypothesis: There is a better than even chance that either John went to the kitchen, or Lily is a frog.
hypothesis_assertion: Either John went to the kitchen, or Lily is a frog.