Complex sentence: In the Eastern Conference Finals, the Celtics faced a 3--1 deficit against the Philadelphia 76ers; but Boston won the last three games of the series, including Game 6 on Philadelphia's home court.
Split into simpler sentences: In the Eastern Conference Finals, the Celtics faced a 3--1 deficit against the Philadelphia 76ers. But Boston won the last three games of the series, including Game 6 on Philadelphia's home court.