Complex sentence: Pat's King of Steaks was founded by Pat and Harry Olivieri in 1930, when they opened a hot dog stall at the corners of 9th Street, Wharton Street and Passyunk Avenue.
Split into simpler sentences: Pat's King of Steaks was founded by Pat and Harry Olivieri in 1930. In 1930, the brothers opened a hot dog stall at the corners of 9th Street, Wharton Street and Passyunk Avenue.