context: Chances are about even that Gertrude is a mouse. There is little chance that Mary moved to the office. It is unlikely that Bernhard is a frog. There is almost no chance that if either Bernhard is a frog, or Gertrude is a mouse, then Brian is gray. There is little chance that if Mary moved to the office, or Gertrude is a mouse, then Sandra left the apple. It is highly likely that if Gertrude is a mouse, or Mary moved to the office, then Greg is a swan.
hypothesis: It is highly likely that either Brian is gray, or Bernhard is a frog.
valid_hypothesis: It is unlikely that either Brian is gray, or Bernhard is a frog.
invalid_hypothesis: It is highly likely that either Brian is gray, or Bernhard is a frog.
hypothesis_assertion: Either Brian is gray, or Bernhard is a frog.