context: We believe that Bernhard is a lion. It is probably the case that John went to the office. There is a better than even chance that Brian is yellow. It is probably not the case that if Brian is yellow, and John went to the office, then Gertrude is a mouse. It is impossible that if either John went to the office, or Bernhard is a lion, then Greg is a swan. It is highly likely that if Brian is yellow, or Bernhard is a lion, then Mary dropped the milk.
hypothesis: It is highly likely that john went to the office, or Brian is yellow.
valid_hypothesis: It is highly likely that john went to the office, or Brian is yellow.
invalid_hypothesis: There is little chance that john went to the office, or Brian is yellow.
hypothesis_assertion: John went to the office, or Brian is yellow.