context: It is probably the case that Brian is a swan. We believe that John went to the kitchen. It is certain that Bernhard is green. It is almost certain that if Bernhard is green, and Brian is a swan, then Mary moved to the office. We believe that if Brian is a swan, and Bernhard is green, then Sandra left the apple. It is impossible that if either John went to the kitchen, or Brian is a swan, then Lily is a frog.
hypothesis: It is improbable that brian is a swan, and Bernhard is green.
valid_hypothesis: It is probable that brian is a swan, and Bernhard is green.
invalid_hypothesis: It is improbable that brian is a swan, and Bernhard is green.
hypothesis_assertion: Brian is a swan, and Bernhard is green.