It took nearly three hours to rescue six people stuck in an elevator in Chicago’s fourth-tallest building early Friday. A broken hoist rope caused the express elevator to malfunction while guests who had just left the Signature Room on the 95th floor rode down toward the lobby. The elevator and two others have since been closed to the public while repairs are made and investigators figure out what happened. When rescuers scrambled to find the stuck elevator early Friday morning, there were no openings between floors because of the building’s blind-shaft style layout. The rescue crew had to hammer out...