context: It is almost certain that Brian is a swan. There is a very good chance that Julius is a rhino. We doubt that John took the apple. It is probably not the case that if either Brian is a swan, or Julius is a rhino, then Jeff went to the office. It is probable that if Julius is a rhino, and Brian is a swan, then Lily is white. It is impossible that if either Julius is a rhino, or Brian is a swan, then Greg is gray.
hypothesis: It is highly likely that greg is gray, or Jeff went to the office.
valid_hypothesis: It is highly unlikely that greg is gray, or Jeff went to the office.
invalid_hypothesis: It is highly likely that greg is gray, or Jeff went to the office.
hypothesis_assertion: Greg is gray, or Jeff went to the office.