context: It is highly unlikely that Greg is green. It is probable that Mary went to the park. There is a very good chance that Brian is a frog. It is unlikely that if Mary went to the park, and Brian is a frog, then Emily is a mouse. There is a very good chance that if Greg is green, or Mary went to the park, then Gertrude is a mouse. It is impossible that if either Mary went to the park, or Greg is green, then John put down the milk.
hypothesis: There is a very good chance that greg is green, or Brian is a frog.
valid_hypothesis: There is a very good chance that greg is green, or Brian is a frog.
invalid_hypothesis: There is little chance that greg is green, or Brian is a frog.
hypothesis_assertion: Greg is green, or Brian is a frog.