input question: Sentence: Attica, Indiana is in the US, where the capital is Washington DC.

Structured data: United States, capital, Washington, D.C.; Attica, Indiana, country, United States

input question: Sentence: Honda makes the Acura TLX which has a V6 engine.

Structured data: Acura TLX, manufacturer, Honda; Acura TLX, engine, V6 engine

input question: Sentence: The Alfa Romeo 164 (alternatively called, the Alfa Romeo 168), has a straight-four engine and is considered a mid-size luxury executive car.

Structured data: Alfa Romeo 164, engine, Straight-four engine; Alfa Romeo 164, alternativeName, "Alfa Romeo 168"; Alfa Romeo 164, class, "Mid-size luxury / Executive car"

input question: Sentence: 101 Helena has an epoch of 2006-12-31 and a periapsis of 331683000.0 km.

Structured data:
101 Helena, periapsis, 331683000.0 (kilometres); 101 Helena, epoch, 2006-12-31