Complex sentence: The Carnegie Free Library of Allegheny in the Allegheny Center neighborhood of Pittsburgh, Pennsylvania, and along with buildings at Braddock and Homestead was one of the first Carnegie libraries in the United States donated to the public by entrepreneur Andrew Carnegie.
Split into simpler sentences: The Carnegie Free Library of Allegheny is situated in the Allegheny Center neighborhood of Pittsburgh, Pennsylvania. Along with buildings at Braddock and Homestead was one of the first Carnegie libraries in the United States donated to the public by entrepreneur Andrew Carnegie.