context: It is certain that Bernhard is a swan. It is probably the case that Brian is a rhino. It is probably not the case that Emily is a wolf. It is probably not the case that if Brian is a rhino, or Emily is a wolf, then Greg is white. Chances are slight that if either Emily is a wolf, or Bernhard is a swan, then Mary went to the garden. It is unlikely that if either Bernhard is a swan, or Emily is a wolf, then Bill dropped the milk.
hypothesis: It is certain that bill dropped the milk, or Bernhard is a swan.
valid_hypothesis: It is certain that bill dropped the milk, or Bernhard is a swan.
invalid_hypothesis: It is probably not the case that bill dropped the milk, or Bernhard is a swan.
hypothesis_assertion: Bill dropped the milk, or Bernhard is a swan.