context: It is likely that Sandra grabbed the apple. It is probably the case that Greg is a swan. It is probably not the case that Lily is yellow. It is impossible that if either Lily is yellow, or Sandra grabbed the apple, then Fred went to the hallway. It is certain that if either Lily is yellow, or Greg is a swan, then Daniel dropped the milk. It is probably not the case that if either Greg is a swan, or Sandra grabbed the apple, then Bernhard is gray.
hypothesis: It is probable that either Greg is a swan, or Bernhard is gray.
valid_hypothesis: It is probable that either Greg is a swan, or Bernhard is gray.
invalid_hypothesis: It is highly unlikely that either Greg is a swan, or Bernhard is gray.
hypothesis_assertion: Either Greg is a swan, or Bernhard is gray.