context: There is a better than even chance that Julius is white. We believe that Sandra took the apple. There is almost no chance that Fred left the milk. There is a very good chance that if either Julius is white, or Fred left the milk, then Lily is white. It is improbable that if Fred left the milk, or Sandra took the apple, then Bill went to the office. Chances are about even that if Fred left the milk, or Sandra took the apple, then Yann is tired.
hypothesis: It is unlikely that either Sandra took the apple, or Bill went to the office.
valid_hypothesis: It is likely that either Sandra took the apple, or Bill went to the office.
invalid_hypothesis: It is unlikely that either Sandra took the apple, or Bill went to the office.
hypothesis_assertion: Either Sandra took the apple, or Bill went to the office.