context: It is unlikely that John moved to the office. It is impossible that Mary went to the kitchen. It is probably not the case that Brian is a swan. It is unlikely that if either Mary went to the kitchen, or John moved to the office, then Lily is a rhino. It is unlikely that if Mary went to the kitchen, and John moved to the office, then Greg is a frog. It is impossible that if either Brian is a swan, or Mary went to the kitchen, then Fred is in the park.
hypothesis: It is probably not the case that either Brian is a swan, or Lily is a rhino.
valid_hypothesis: It is probably not the case that either Brian is a swan, or Lily is a rhino.
invalid_hypothesis: We believe that either Brian is a swan, or Lily is a rhino.
hypothesis_assertion: Either Brian is a swan, or Lily is a rhino.