context: It is unlikely that Mary got the milk. It is improbable that Brian is green. It is highly likely that John picked up the apple. It is probably the case that if Brian is green, and Mary got the milk, then Gertrude is a mouse. It is improbable that if Brian is green, and Mary got the milk, then Yann is tired. There is a better than even chance that if either John picked up the apple, or Mary got the milk, then Bernhard is a swan.
hypothesis: It is highly unlikely that either Bernhard is a swan, or Mary got the milk.
valid_hypothesis: There is a better than even chance that either Bernhard is a swan, or Mary got the milk.
invalid_hypothesis: It is highly unlikely that either Bernhard is a swan, or Mary got the milk.
hypothesis_assertion: Either Bernhard is a swan, or Mary got the milk.