context: It is likely that Jessica is a mouse. It is improbable that John went to the garden. Chances are slight that Sandra dropped the milk. There is little chance that if Jessica is a mouse, or John went to the garden, then Bernhard is white. There is little chance that if Jessica is a mouse, or Sandra dropped the milk, then Greg is a rhino. It is probably not the case that if Sandra dropped the milk, or John went to the garden, then Julius is a swan.
hypothesis: It is likely that either Sandra dropped the milk, or Bernhard is white.
valid_hypothesis: It is unlikely that either Sandra dropped the milk, or Bernhard is white.
invalid_hypothesis: It is likely that either Sandra dropped the milk, or Bernhard is white.
hypothesis_assertion: Either Sandra dropped the milk, or Bernhard is white.