context: There is little chance that Greg is a lion. It is unlikely that Bernhard is a frog. It is unlikely that Fred left the football.
hypothesis: It is likely that fred left the football, or Bernhard is a frog.
valid_hypothesis: It is probably not the case that fred left the football, or Bernhard is a frog.
invalid_hypothesis: It is likely that fred left the football, or Bernhard is a frog.
hypothesis_assertion: Fred left the football, or Bernhard is a frog.