context: It is highly likely that John went to the office. Chances are slight that Lily is yellow. Chances are about even that Bernhard is white. It is probable that if either Bernhard is white, or Lily is yellow, then Sumit is bored. There is almost no chance that if either Bernhard is white, or John went to the office, then Greg is yellow. Chances are about even that if John went to the office, and Bernhard is white, then Sandra left the milk.
hypothesis: We believe that sandra left the milk, or Greg is yellow.
valid_hypothesis: It is probably not the case that sandra left the milk, or Greg is yellow.
invalid_hypothesis: We believe that sandra left the milk, or Greg is yellow.
hypothesis_assertion: Sandra left the milk, or Greg is yellow.