context: It is almost certain that Julius is a frog. There is a very good chance that Brian is a swan. It is certain that John left the apple. It is highly likely that if John left the apple, and Julius is a frog, then Antoine is hungry. It is improbable that if either Brian is a swan, or John left the apple, then Lily is a lion. It is certain that if either John left the apple, or Brian is a swan, then Mary went to the office.
hypothesis: It is certain that julius is a frog, or Brian is a swan.
valid_hypothesis: It is certain that julius is a frog, or Brian is a swan.
invalid_hypothesis: It is unlikely that julius is a frog, or Brian is a swan.
hypothesis_assertion: Julius is a frog, or Brian is a swan.