context: Chances are slight that Bernhard is white. There is little chance that Brian is a frog. There is almost no chance that Sandra left the football. It is likely that if either Brian is a frog, or Sandra left the football, then Julius is green. Chances are slight that if Sandra left the football, or Bernhard is white, then Greg is a rhino. It is highly likely that if either Bernhard is white, or Sandra left the football, then John discarded the milk.
hypothesis: It is almost certain that either Brian is a frog, or Greg is a rhino.
valid_hypothesis: It is improbable that either Brian is a frog, or Greg is a rhino.
invalid_hypothesis: It is almost certain that either Brian is a frog, or Greg is a rhino.
hypothesis_assertion: Either Brian is a frog, or Greg is a rhino.