context: There is little chance that Bernhard is a swan. It is unlikely that Julius is a rhino. It is almost certain that Mary went to the kitchen. It is highly likely that if Bernhard is a swan, and Mary went to the kitchen, then Brian is a lion. It is probably the case that if either Mary went to the kitchen, or Julius is a rhino, then Gertrude is a mouse. Chances are slight that if either Mary went to the kitchen, or Bernhard is a swan, then John moved to the office.
hypothesis: It is certain that john moved to the office, and Brian is a lion.
valid_hypothesis: It is impossible that john moved to the office, and Brian is a lion.
invalid_hypothesis: It is certain that john moved to the office, and Brian is a lion.
hypothesis_assertion: John moved to the office, and Brian is a lion.