context: It is likely that Lily is a rhino. It is improbable that Greg is green. It is improbable that Sandra left the milk. We believe that if Sandra left the milk, or Lily is a rhino, then John went to the kitchen. It is impossible that if Greg is green, and Lily is a rhino, then Mary is in the park. It is certain that if Lily is a rhino, or Greg is green, then Julius is gray.
hypothesis: There is little chance that greg is green, or Lily is a rhino.
valid_hypothesis: We believe that greg is green, or Lily is a rhino.
invalid_hypothesis: There is little chance that greg is green, or Lily is a rhino.
hypothesis_assertion: Greg is green, or Lily is a rhino.