context: A man on one miniature train passes a circular object to a man on another train as they pass by.
hypothesis: We believe that two trains of different sizes but following each other side by side going to opposing directions.
valid_hypothesis: We believe that two trains of different sizes but following each other side by side going to opposing directions.
invalid_hypothesis: It is impossible that two trains of different sizes but following each other side by side going to opposing directions.
hypothesis_assertion: Two trains of different sizes but following each other side by side going to opposing directions.