context: It is certain that Gertrude is a mouse. It is probable that Jeff went to the office. There is little chance that John put down the milk. It is impossible that if John put down the milk, or Gertrude is a mouse, then Brian is yellow. It is improbable that if John put down the milk, and Jeff went to the office, then Yann is thirsty. It is likely that if John put down the milk, or Jeff went to the office, then Julius is gray.
hypothesis: It is likely that either Jeff went to the office, or Julius is gray.
valid_hypothesis: It is probably not the case that either Jeff went to the office, or Julius is gray.
invalid_hypothesis: It is likely that either Jeff went to the office, or Julius is gray.
hypothesis_assertion: Either Jeff went to the office, or Julius is gray.