Complex sentence: The Yale University Art Gallery, the country's first university-affiliated art museum, contains more than 180,000 works, including Old Masters and important collections of modern art, in the Swartout and Kahn buildings.
Split into simpler sentences: The Yale University Art Gallery is the country's first university-affiliated art museum. It contains more than 180,000 works, including old masters and important collections of modern art, in the Swartout and Kahn buildings.