With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Beautiful (Christina Aguilera song) was recorded by Christina Aguilera.
text_B: A wheel clamp , also known as wheel boot , parking boot , or Denver boot , is a device that is designed to prevent vehicles from being moved .. Denver. Denver. In its most common form , it consists of a clamp that surrounds a vehicle wheel , designed to prevent removal of both itself and the wheel .. In the United States , the device became known as a `` Denver boot '' after the city of Denver , Colorado , which was the first place in the country to employ them , mostly to force the payment of outstanding parking tickets .. Denver. Denver
not_related.