context: There is almost no chance that Bernhard is gray. There is almost no chance that Daniel grabbed the milk. There is little chance that Brian is a frog. There is a better than even chance that if Daniel grabbed the milk, or Brian is a frog, then John dropped the apple. We doubt that if either Bernhard is gray, or Brian is a frog, then Sandra got the apple. It is probably the case that if either Daniel grabbed the milk, or Bernhard is gray, then Greg is yellow.
hypothesis: It is probably the case that either Sandra got the apple, or Bernhard is gray.
valid_hypothesis: It is highly unlikely that either Sandra got the apple, or Bernhard is gray.
invalid_hypothesis: It is probably the case that either Sandra got the apple, or Bernhard is gray.
hypothesis_assertion: Either Sandra got the apple, or Bernhard is gray.