input question: Sentence: The leader of Buenos Aires is Diego Santilli.

Structured data: Buenos Aires, leader, Diego Santilli

input question: Sentence: 1634: The Bavarian Crisis is written by Virginia DeMarce and Eric Flint.

Structured data: 1634: The Bavarian Crisis, author, "Virginia DeMarce and Eric Flint"

input question: Sentence: 101 Helena, was discovered by James Craig Watson, who studied at the University of Michigan, and died from peritonitis, in Madison, Wisconsin.

Structured data: 101 Helena, discoverer, James Craig Watson; James Craig Watson, almaMater, University of Michigan; James Craig Watson, deathPlace, Madison, Wisconsin; James Craig Watson, deathCause, Peritonitis

input question: Sentence: 410777) 2009 FD has an apoapsis of 259776702.47055 kilometres and a density of 1890.0 kilograms per cubic metres.

Structured data:
(410777) 2009 FD, density, 1890.0 (kilogramPerCubicMetres); (410777) 2009 FD, apoapsis, 259776702.47055 (kilometres)