context: We believe that Julius is a rhino. We doubt that Greg is a swan. We doubt that Mary moved to the office. Chances are slight that if Greg is a swan, and Mary moved to the office, then Bill went to the bedroom. We believe that if Julius is a rhino, or Greg is a swan, then Lily is a frog. We doubt that if Julius is a rhino, and Mary moved to the office, then John discarded the milk.
hypothesis: We doubt that greg is a swan, or Lily is a frog.
valid_hypothesis: It is probably the case that greg is a swan, or Lily is a frog.
invalid_hypothesis: We doubt that greg is a swan, or Lily is a frog.
hypothesis_assertion: Greg is a swan, or Lily is a frog.