context: There is almost no chance that Greg is a frog. It is unlikely that Fred is in the park. It is impossible that Mary dropped the apple. It is probably not the case that if either Fred is in the park, or Greg is a frog, then Julius is gray. It is highly unlikely that if Mary dropped the apple, and Greg is a frog, then Lily is a swan. It is impossible that if Fred is in the park, and Greg is a frog, then Bernhard is yellow.
hypothesis: It is highly unlikely that either Julius is gray, or Bernhard is yellow.
valid_hypothesis: It is highly unlikely that either Julius is gray, or Bernhard is yellow.
invalid_hypothesis: We believe that either Julius is gray, or Bernhard is yellow.
hypothesis_assertion: Either Julius is gray, or Bernhard is yellow.