Input: Article: The first blue-violet LED using magnesium-doped gallium nitride was made at Stanford University in 1972 by Herb Maruska and Wally Rhines, doctoral students in materials science and engineering. At the time Maruska was on leave from RCA Laboratories, where he collaborated with Jacques Pankove on related work. In 1971, the year after Maruska left for Stanford, his RCA colleagues Pankove and Ed Miller demonstrated the first blue electroluminescence from zinc-doped gallium nitride, though the subsequent device Pankove and Miller built, the first actual gallium nitride light-emitting diode, emitted green light. In 1974 the U.S. Patent Office awarded Maruska, Rhines and Stanford professor David Stevenson a patent for their work in 1972 (U.S. Patent US3819974 A) and today magnesium-doping of gallium nitride continues to be the basis for all commercial blue LEDs and laser diodes. These devices built in the early 1970s had too little light output to be of practical use and research into gallium nitride devices slowed. In August 1989, Cree introduced the first commercially available blue LED based on the indirect bandgap semiconductor, silicon carbide (SiC). SiC LEDs had very low efficiency, no more than about 0.03%, but did emit in the blue portion of the visible light spectrum.[citation needed]

Now answer this question: When was the first blue-violet LED developed?

Output: 1972

Input: Article: Miami has one of the largest television markets in the nation and the second largest in the state of Florida. Miami has several major newspapers, the main and largest newspaper being The Miami Herald. El Nuevo Herald is the major and largest Spanish-language newspaper. The Miami Herald and El Nuevo Herald are Miami's and South Florida's main, major and largest newspapers. The papers left their longtime home in downtown Miami in 2013. The newspapers are now headquartered at the former home of U.S. Southern Command in Doral.

Now answer this question: What is the largest newspaper in Miami?

Output: Miami Herald

Input: Article: The university houses the following public broadcasting stations: KJHK, a student-run campus radio station, KUJH-LP, an independent station that primarily broadcasts public affairs programs, and KANU, the NPR-affiliated radio station. Kansas Public Radio station KANU was one of the first public radio stations in the nation. KJHK, the campus radio has roots back to 1952 and is completely run by students.

Now answer this question: When did KJHK first broadcast?

Output:
1952