Complex sentence: For example, most of Mascara's neighborhood in Charleroi was drawn into the 12th, except for a long tendril extending from his house to just outside Pittsburgh that remained in the 18th.
Split into simpler sentences: For example, most of Mascara's hometown, Charleroi, including most of his neighborhood, was drawn into the 12th. However, a long tendril extending from his house to Allegheny County remained in the 18th.