context: There is a very good chance that Brian is a rhino. Chances are about even that Mary went to the office. It is impossible that Bernhard is white.
hypothesis: There is a very good chance that either Brian is a rhino, or Bernhard is white.
valid_hypothesis: There is a very good chance that either Brian is a rhino, or Bernhard is white.
invalid_hypothesis: It is unlikely that either Brian is a rhino, or Bernhard is white.
hypothesis_assertion: Either Brian is a rhino, or Bernhard is white.