context: Chances are about even that Brian is yellow. It is impossible that Lily is a rhino. It is certain that Greg is a frog. There is a better than even chance that if Greg is a frog, and Lily is a rhino, then Bernhard is a lion. It is probably the case that if either Lily is a rhino, or Brian is yellow, then John dropped the apple. It is almost certain that if Brian is yellow, and Greg is a frog, then Jeff went to the garden.
hypothesis: There is almost no chance that greg is a frog, and Brian is yellow.
valid_hypothesis: Chances are about even that greg is a frog, and Brian is yellow.
invalid_hypothesis: There is almost no chance that greg is a frog, and Brian is yellow.
hypothesis_assertion: Greg is a frog, and Brian is yellow.