Complex sentence: Syng was also an associate of Benjamin Franklin and was a prominent member of the Philadelphia community who assisted in the founding of the Library Company of Philadelphia, the American Philosophical Society, the Union Fire Company, and the University of Pennsylvania.
Split into simpler sentences: Syng was also an associate of Benjamin Franklin and was a prominent member of the Philadelphia community. He assisted in the founding of the Library Company of Philadelphia, the American Philosophical Society, the Union Fire Company, and the University of Pennsylvania.