context: We believe that Greg is a rhino. It is unlikely that Julius is green. There is almost no chance that Sandra put down the milk. There is almost no chance that if Julius is green, or Sandra put down the milk, then Jeff dropped the apple. It is probable that if either Sandra put down the milk, or Julius is green, then Mary went to the office. It is probable that if either Julius is green, or Greg is a rhino, then Bernhard is a frog.
hypothesis: It is highly unlikely that mary went to the office, or Greg is a rhino.
valid_hypothesis: There is a very good chance that mary went to the office, or Greg is a rhino.
invalid_hypothesis: It is highly unlikely that mary went to the office, or Greg is a rhino.
hypothesis_assertion: Mary went to the office, or Greg is a rhino.