context: It is probably the case that Greg is green. It is highly unlikely that Lily is a lion. There is almost no chance that Fred is in the kitchen. It is almost certain that if Greg is green, and Lily is a lion, then Julius is a swan. It is highly unlikely that if Fred is in the kitchen, or Lily is a lion, then Bill went to the kitchen. It is unlikely that if either Greg is green, or Fred is in the kitchen, then Sandra got the apple.
hypothesis: It is highly unlikely that fred is in the kitchen, or Julius is a swan.
valid_hypothesis: It is highly unlikely that fred is in the kitchen, or Julius is a swan.
invalid_hypothesis: It is certain that fred is in the kitchen, or Julius is a swan.
hypothesis_assertion: Fred is in the kitchen, or Julius is a swan.