context: It is improbable that Bernhard is a frog. There is a very good chance that Greg is a frog. Chances are slight that John went to the kitchen. It is certain that if either Greg is a frog, or John went to the kitchen, then Julius is a rhino. It is probably not the case that if either Bernhard is a frog, or Greg is a frog, then Mary moved to the office. There is a better than even chance that if John went to the kitchen, and Greg is a frog, then Brian is gray.
hypothesis: It is almost certain that either John went to the kitchen, or Mary moved to the office.
valid_hypothesis: It is probably not the case that either John went to the kitchen, or Mary moved to the office.
invalid_hypothesis: It is almost certain that either John went to the kitchen, or Mary moved to the office.
hypothesis_assertion: Either John went to the kitchen, or Mary moved to the office.