context: There is almost no chance that Lily is gray. There is a better than even chance that Bill dropped the milk. It is probably not the case that John went to the garden. It is improbable that if Bill dropped the milk, or John went to the garden, then Mary moved to the office. There is a very good chance that if Lily is gray, and John went to the garden, then Greg is yellow. We doubt that if Bill dropped the milk, or Lily is gray, then Julius is a rhino.
hypothesis: We believe that either Mary moved to the office, or Greg is yellow.
valid_hypothesis: It is highly unlikely that either Mary moved to the office, or Greg is yellow.
invalid_hypothesis: We believe that either Mary moved to the office, or Greg is yellow.
hypothesis_assertion: Either Mary moved to the office, or Greg is yellow.