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physical object > person > scientist > astronomer > Galileo Galilei

Galileo Galilei
subject			fact

Galileo Galilei	is an instance of astronomer
astronomer	has domain astronomy
scientist	has greatest achievement
	has career
person	has birth date
physical object	has location or center of gravity
	has angular momentum
	has mass
	has velocity
	has momentum
	has temperature
	has volume
	has extent
	has material