context: A young couple and many others out enjoying themselves at an outdoor street event.
hypothesis: It is certain that the young couple are looking at goods being sold by the street vendors.
valid_hypothesis: There is little chance that the young couple are looking at goods being sold by the street vendors.
invalid_hypothesis: It is certain that the young couple are looking at goods being sold by the street vendors.
hypothesis_assertion: The young couple are looking at goods being sold by the street vendors.