Sentence: A Wizard of Mars was Published in the United States where Barack Obama is president.

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

A: United States, leader, Barack Obama; A Wizard of Mars, country, United States

Sentence: The 11th Mississippi Infantry Monument is in Pennsylvania.

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

A: 11th Mississippi Infantry Monument, state, "Pennsylvania"

Sentence: The United States covers a total area of 9833516.63 (square kilometres).

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

A:
United States, areaTotal, 9833516.63 (square kilometres)