context: It is likely that Greg is a rhino. It is almost certain that Bernhard is a swan. It is unlikely that Sandra dropped the milk. There is almost no chance that if either Bernhard is a swan, or Greg is a rhino, then Emily is a mouse. It is almost certain that if either Bernhard is a swan, or Greg is a rhino, then Lily is green. Chances are slight that if either Greg is a rhino, or Sandra dropped the milk, then John went to the kitchen.
hypothesis: It is highly unlikely that either Sandra dropped the milk, or Lily is green.
valid_hypothesis: Chances are about even that either Sandra dropped the milk, or Lily is green.
invalid_hypothesis: It is highly unlikely that either Sandra dropped the milk, or Lily is green.
hypothesis_assertion: Either Sandra dropped the milk, or Lily is green.