context: It is certain that Sandra grabbed the milk. It is improbable that Lily is white. It is improbable that Daniel got the apple. It is impossible that if Sandra grabbed the milk, and Daniel got the apple, then Mary went to the office. It is impossible that if Sandra grabbed the milk, and Lily is white, then Greg is yellow. There is a better than even chance that if either Daniel got the apple, or Sandra grabbed the milk, then Bernhard is a swan.
hypothesis: Chances are about even that either Mary went to the office, or Bernhard is a swan.
valid_hypothesis: Chances are about even that either Mary went to the office, or Bernhard is a swan.
invalid_hypothesis: There is almost no chance that either Mary went to the office, or Bernhard is a swan.
hypothesis_assertion: Either Mary went to the office, or Bernhard is a swan.