context: A little white curly-haired dog runs across the pavement with a stick in its mouth.
hypothesis: It is certain that a dog runs toward his owner with a stick in his mouth.
valid_hypothesis: Chances are about even that a dog runs toward his owner with a stick in his mouth.
invalid_hypothesis: It is certain that a dog runs toward his owner with a stick in his mouth.
hypothesis_assertion: A dog runs toward his owner with a stick in his mouth.