Anchor: A couple of boys are in a gym with partially assembled bicycles.
Entailed: The boys are working on their bikes inside.
Contradiction: The boys are working on their skateboards.
Contradiction: The guy is singing to the kids.
Contradiction: A group of people are exercising.
Contradiction: 7. Basic Financial Data and Kohler's Dictionary for Lawyers
Contradiction: A person is walking alone outside.