Premise: The Arts Tower is a building at 12 Bolsover Street in Sheffield, England belonging to the University of Sheffield and opened in 1966. English Heritage has called it "the most elegant university tower block in Britain of its period". At 78 m (255 feet) tall, it is the second tallest building in the city, after the 101 m, St Paul's Tower on Arundel Gate, which was topped out in 2009.
Hypothesis: The city of Sheffield has one tower.