Sentence: A Fortress of Grey Ice is from the United States, 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; A Fortress of Grey Ice, country, United States

Sentence: Rolando Maran (born in Italy), has managed AC Chievo Verona and played for Carrarese Calcio.

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

A: A.C. Chievo Verona, manager, Rolando Maran; Rolando Maran, birthPlace, Italy; Rolando Maran, club, Carrarese Calcio

Sentence: The comic character Dane Whitman Black Knight is also known as simply Dane Whitman.

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

A:
Dane Whitman Black Knight (comicsCharacter), alternativeName, "Dane Whitman"