context: There is little chance that Brian is a swan. It is improbable that Bill went to the office. It is probable that Lily is a rhino. There is a very good chance that if either Brian is a swan, or Lily is a rhino, then Antoine is bored. It is likely that if Brian is a swan, or Lily is a rhino, then Greg is a frog. Chances are slight that if Brian is a swan, and Lily is a rhino, then Julius is gray.
hypothesis: It is impossible that julius is gray, and Greg is a frog.
valid_hypothesis: It is impossible that julius is gray, and Greg is a frog.
invalid_hypothesis: It is almost certain that julius is gray, and Greg is a frog.
hypothesis_assertion: Julius is gray, and Greg is a frog.