context: Chances are slight that Daniel left the football. It is highly unlikely that Julius is a swan. We believe that Yann is tired. Chances are slight that if Julius is a swan, and Daniel left the football, then Mary put down the milk. It is probable that if either Julius is a swan, or Yann is tired, then Sumit is bored. It is probably not the case that if either Daniel left the football, or Yann is tired, then John took the apple.
hypothesis: It is certain that mary put down the milk, and John took the apple.
valid_hypothesis: It is impossible that mary put down the milk, and John took the apple.
invalid_hypothesis: It is certain that mary put down the milk, and John took the apple.
hypothesis_assertion: Mary put down the milk, and John took the apple.