context: It is probable that Jessica is a sheep. Chances are about even that Brian is a frog. It is unlikely that Jeff went to the garden.
hypothesis: It is certain that brian is a frog, and Jessica is a sheep.
valid_hypothesis: It is probably not the case that brian is a frog, and Jessica is a sheep.
invalid_hypothesis: It is certain that brian is a frog, and Jessica is a sheep.
hypothesis_assertion: Brian is a frog, and Jessica is a sheep.