context: It is certain that Fred left the milk. It is probably the case that Brian is green. There is a very good chance that Emily is a cat. It is unlikely that if either Emily is a cat, or Fred left the milk, then Greg is a rhino. It is probably not the case that if Fred left the milk, and Emily is a cat, then Julius is a frog. It is certain that if Brian is green, or Fred left the milk, then Gertrude is a mouse.
hypothesis: There is a better than even chance that emily is a cat, and Brian is green.
valid_hypothesis: There is a better than even chance that emily is a cat, and Brian is green.
invalid_hypothesis: There is little chance that emily is a cat, and Brian is green.
hypothesis_assertion: Emily is a cat, and Brian is green.