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general relativity comparison table

Subject	has definition	has phenomena	has subset	has competing theory	has implication	has author	has synonym	is a kind of	is an instance of
relativity theory						or reasearch group		physics theory
general relativity	Gravitation is a curvature in four-dimensional space-time rather than as a force existing between two masses.	gravity	special relativity	twistor theory	four-dimensional structure of space-time	Einstein (1915)	Einstein's theory of gravity		relativity theory

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