input question: Sentence: The ALV X-1 was launched at Mid Atlantic Regional Spaceport, with one launch failure and 2 rocket stages. It is 1.524 meters in diameter.

Structured data: ALV X-1, diameter, 1.524 (metres); ALV X-1, launchSite, Mid-Atlantic Regional Spaceport; ALV X-1, failedLaunches, 1; ALV X-1, rocketStages, 2

input question: Sentence: Athens is located in Greece and is served by the Athens International Airport. The leader of Greece is Prokopis Pavlopoulos.

Structured data: Athens International Airport, cityServed, Athens; Athens, country, Greece; Greece, leader, Prokopis Pavlopoulos

input question: Sentence: The ALCO RS-3 was built by the Montreal Locomotive Works and has a V12 engine.

Structured data: ALCO RS-3, builder, Montreal Locomotive Works; ALCO RS-3, engine, V12 engine

input question: Sentence: John Roberts is a leader in the United States.

Structured data:
United States, leader, John Roberts