context: It is highly likely that Brian is yellow. We doubt that Mary went to the office. It is probably the case that Gertrude is a mouse. It is likely that if Mary went to the office, or Brian is yellow, then Emily is a wolf. It is improbable that if either Mary went to the office, or Gertrude is a mouse, then John picked up the milk. It is probable that if Mary went to the office, and Gertrude is a mouse, then Greg is a rhino.
hypothesis: It is probably the case that mary went to the office, or Greg is a rhino.
valid_hypothesis: We doubt that mary went to the office, or Greg is a rhino.
invalid_hypothesis: It is probably the case that mary went to the office, or Greg is a rhino.
hypothesis_assertion: Mary went to the office, or Greg is a rhino.