context: Chances are slight that Antoine is hungry. There is a better than even chance that Greg is a swan. Chances are slight that Daniel grabbed the milk. It is almost certain that if Daniel grabbed the milk, and Antoine is hungry, then Mary moved to the garden. We doubt that if Daniel grabbed the milk, and Antoine is hungry, then Lily is a rhino. Chances are slight that if either Antoine is hungry, or Daniel grabbed the milk, then Bill went to the hallway.
hypothesis: Chances are slight that either Greg is a swan, or Bill went to the hallway.
valid_hypothesis: There is a better than even chance that either Greg is a swan, or Bill went to the hallway.
invalid_hypothesis: Chances are slight that either Greg is a swan, or Bill went to the hallway.
hypothesis_assertion: Either Greg is a swan, or Bill went to the hallway.