Sentence: Douglas R. Oberhelman is a key person at Caterpillar Inc which was founded in California. The company is located in Illinois and powers the AIDAluna.

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

A: Caterpillar Inc., keyPerson, Douglas R. Oberhelman; Caterpillar Inc., location, Illinois; Caterpillar Inc., foundationPlace, California; AIDAluna, powerType, Caterpillar Inc.

Sentence: 1793-10-23 was Alvah Sabin's birthdate.

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

A: Alvah Sabin, birthDate, 1793-10-23

Sentence: Amsterdam airport Schiphol is -3.3528 above sea level.

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

A:
Amsterdam Airport Schiphol, elevationAboveTheSeaLevel, -3.3528