context: There is little chance that Emily is a wolf. Chances are about even that Bernhard is a swan. There is almost no chance that Greg is a frog. It is improbable that if either Bernhard is a swan, or Greg is a frog, then John moved to the garden. It is improbable that if Emily is a wolf, or Bernhard is a swan, then Mary put down the apple. Chances are slight that if Emily is a wolf, or Greg is a frog, then Yann is tired.
hypothesis: It is almost certain that bernhard is a swan, or Yann is tired.
valid_hypothesis: Chances are about even that bernhard is a swan, or Yann is tired.
invalid_hypothesis: It is almost certain that bernhard is a swan, or Yann is tired.
hypothesis_assertion: Bernhard is a swan, or Yann is tired.