Sentence: John van den Brom, who managed AZ Alkmaar, plays for Vitesse Arnhem.

Question: What structured data could we extract from this sentence?

A: AZ Alkmaar, manager, John van den Brom; John van den Brom, club, Vitesse Arnhem

Sentence: White Americans are an ethnic group in the U.S.

Question: What structured data could we extract from this sentence?

A: United States, ethnicGroup, White Americans

Sentence: Akron is in Summit County, Ohio, US. Native Americans are an ethnic group in the US whose capital is Washington DC and whose leader is called the President.

Question: What structured data could we extract from this sentence?

A:
United States, leaderTitle, President of the United States; United States, capital, Washington, D.C.; United States, ethnicGroup, Native Americans in the United States; Akron, Ohio, country, United States; Akron, Ohio, isPartOf, Summit County, Ohio