context: There is little chance that Lily is yellow. It is certain that Mary is in the office. It is highly unlikely that Gertrude is a mouse. There is almost no chance that if Gertrude is a mouse, or Lily is yellow, then Bernhard is green. There is a better than even chance that if either Gertrude is a mouse, or Mary is in the office, then Brian is a swan. It is unlikely that if either Mary is in the office, or Lily is yellow, then Greg is a frog.
hypothesis: It is certain that mary is in the office, and Greg is a frog.
valid_hypothesis: We doubt that mary is in the office, and Greg is a frog.
invalid_hypothesis: It is certain that mary is in the office, and Greg is a frog.
hypothesis_assertion: Mary is in the office, and Greg is a frog.