context: It is impossible that John moved to the office. There is almost no chance that Greg is a swan. There is little chance that Brian is a lion. It is unlikely that if either John moved to the office, or Greg is a swan, then Jessica is a mouse. Chances are about even that if Brian is a lion, or John moved to the office, then Lily is gray. It is likely that if Brian is a lion, and John moved to the office, then Bernhard is a lion.
hypothesis: We believe that greg is a swan, or Bernhard is a lion.
valid_hypothesis: There is almost no chance that greg is a swan, or Bernhard is a lion.
invalid_hypothesis: We believe that greg is a swan, or Bernhard is a lion.
hypothesis_assertion: Greg is a swan, or Bernhard is a lion.