input question: Sentence: Felipe VI is the leader of Spain, a country where the people are called Spaniards. Arros negre is from the Catalonia region of Spain. Carles Puigdemont is the leader of Catalonia.

Structured data: Catalonia, leader, Carles Puigdemont; Arros negre, country, Spain; Spain, demonym, Spaniards; Spain, leader, Felipe VI of Spain; Arros negre, region, Catalonia

input question: Sentence: St Louis is part of Greater St Louis.

Structured data: St. Louis, isPartOf, Greater St. Louis

input question: Sentence: Walter Baade's doctoral student was Halton Arp.

Structured data: Walter Baade, doctoralStudent, Halton Arp

input question: Sentence: The Alfa Romeo 164 is also known as the "Alfa Romeo 168" and is considered a mid-size luxury executive car. It has a 6-speed manual Getrag transmission and a straight-four engine.

Structured data:
Alfa Romeo 164, engine, Straight-four engine; Alfa Romeo 164, transmission, "6-speed manual (Getrag)"; Alfa Romeo 164, alternativeName, "Alfa Romeo 168"; Alfa Romeo 164, class, "Mid-size luxury / Executive car"