context: There is a very good chance that John moved to the office. It is impossible that Brian is a frog. There is a better than even chance that Mary went to the park. We doubt that if Mary went to the park, or Brian is a frog, then Fred is in the park. Chances are slight that if either Mary went to the park, or Brian is a frog, then Winona is a cat. There is a better than even chance that if Brian is a frog, and John moved to the office, then Bernhard is a swan.
hypothesis: We believe that either John moved to the office, or Fred is in the park.
valid_hypothesis: We believe that either John moved to the office, or Fred is in the park.
invalid_hypothesis: Chances are slight that either John moved to the office, or Fred is in the park.
hypothesis_assertion: Either John moved to the office, or Fred is in the park.