context: Chances are slight that Lily is a rhino. It is probable that Mary went to the kitchen. Chances are slight that Sandra took the football. There is almost no chance that if either Mary went to the kitchen, or Lily is a rhino, then Greg is yellow. It is highly unlikely that if Lily is a rhino, and Sandra took the football, then Bernhard is a lion. We doubt that if either Mary went to the kitchen, or Sandra took the football, then Julius is white.
hypothesis: We believe that either Julius is white, or Greg is yellow.
valid_hypothesis: It is improbable that either Julius is white, or Greg is yellow.
invalid_hypothesis: We believe that either Julius is white, or Greg is yellow.
hypothesis_assertion: Either Julius is white, or Greg is yellow.