context: It is almost certain that Emily is a mouse. It is improbable that Greg is a frog. It is likely that Bill dropped the milk. Chances are slight that if Bill dropped the milk, and Greg is a frog, then Mary went to the office. It is probably the case that if Greg is a frog, or Emily is a mouse, then John took the apple. We doubt that if Greg is a frog, or Emily is a mouse, then Bernhard is a lion.
hypothesis: It is certain that bill dropped the milk, or Emily is a mouse.
valid_hypothesis: It is certain that bill dropped the milk, or Emily is a mouse.
invalid_hypothesis: It is unlikely that bill dropped the milk, or Emily is a mouse.
hypothesis_assertion: Bill dropped the milk, or Emily is a mouse.