context: It is probable that Lily is a swan. There is a better than even chance that Sandra left the apple. It is almost certain that John grabbed the milk. It is impossible that if John grabbed the milk, and Sandra left the apple, then Yann is tired. There is a better than even chance that if either John grabbed the milk, or Lily is a swan, then Jeff went to the office. It is likely that if Sandra left the apple, and John grabbed the milk, then Julius is a frog.
hypothesis: Chances are about even that julius is a frog, or Jeff went to the office.
valid_hypothesis: Chances are about even that julius is a frog, or Jeff went to the office.
invalid_hypothesis: It is impossible that julius is a frog, or Jeff went to the office.
hypothesis_assertion: Julius is a frog, or Jeff went to the office.