context: It is certain that Bill went to the kitchen. It is probably not the case that John left the milk. It is impossible that Julie is in the bedroom. There is little chance that if Bill went to the kitchen, or Julie is in the bedroom, then Julius is gray. It is likely that if Bill went to the kitchen, and John left the milk, then Bernhard is a frog. It is almost certain that if John left the milk, and Julie is in the bedroom, then Greg is yellow.
hypothesis: It is highly unlikely that either John left the milk, or Bernhard is a frog.
valid_hypothesis: It is highly unlikely that either John left the milk, or Bernhard is a frog.
invalid_hypothesis: There is a very good chance that either John left the milk, or Bernhard is a frog.
hypothesis_assertion: Either John left the milk, or Bernhard is a frog.