context: There is a better than even chance that Mary went to the office. It is certain that John picked up the milk. There is a very good chance that Lily is green. Chances are about even that if either Mary went to the office, or Lily is green, then Bernhard is gray. It is probably the case that if either Mary went to the office, or Lily is green, then Greg is a rhino. It is unlikely that if Lily is green, and John picked up the milk, then Brian is a frog.
hypothesis: There is little chance that either Brian is a frog, or John picked up the milk.
valid_hypothesis: There is a very good chance that either Brian is a frog, or John picked up the milk.
invalid_hypothesis: There is little chance that either Brian is a frog, or John picked up the milk.
hypothesis_assertion: Either Brian is a frog, or John picked up the milk.