context: It is certain that Mary moved to the garden. It is likely that Sandra left the apple. It is highly likely that Brian is a rhino. Chances are slight that if either Brian is a rhino, or Mary moved to the garden, then Bernhard is a frog. It is probably the case that if either Sandra left the apple, or Brian is a rhino, then Lily is a lion. There is a very good chance that if Mary moved to the garden, and Sandra left the apple, then Jeff discarded the milk.
hypothesis: It is highly likely that either Brian is a rhino, or Bernhard is a frog.
valid_hypothesis: It is highly likely that either Brian is a rhino, or Bernhard is a frog.
invalid_hypothesis: It is impossible that either Brian is a rhino, or Bernhard is a frog.
hypothesis_assertion: Either Brian is a rhino, or Bernhard is a frog.