Sentence: The Luxury Class, Alfa Romeo 164 Sedan, known as the "Alfa Romeo 168", has a straight-four engine.

What structured data could we extract from this sentence?
Alfa Romeo 164, bodyStyle, Sedan (automobile); Alfa Romeo 164, class, Luxury vehicle; Alfa Romeo 164, engine, Straight-four engine; Alfa Romeo 164, alternativeName, "Alfa Romeo 168"