context: It is impossible that Mary went to the office. It is certain that Fred is in the bedroom. There is almost no chance that Brian is a rhino. It is highly unlikely that if Fred is in the bedroom, or Brian is a rhino, then John put down the apple. Chances are about even that if Brian is a rhino, or Mary went to the office, then Greg is a lion. There is a very good chance that if Mary went to the office, or Brian is a rhino, then Julius is a swan.
hypothesis: It is certain that john put down the apple, or Fred is in the bedroom.
valid_hypothesis: It is certain that john put down the apple, or Fred is in the bedroom.
invalid_hypothesis: It is improbable that john put down the apple, or Fred is in the bedroom.
hypothesis_assertion: John put down the apple, or Fred is in the bedroom.