context: There is little chance that Mary left the football. It is probably the case that Bernhard is a frog. It is certain that Julius is a swan.
hypothesis: It is certain that mary left the football, or Julius is a swan.
valid_hypothesis: It is certain that mary left the football, or Julius is a swan.
invalid_hypothesis: It is improbable that mary left the football, or Julius is a swan.
hypothesis_assertion: Mary left the football, or Julius is a swan.