Complex sentence: The city saw a large emigration into the suburbs, and fine dining could be found mainly in private clubs and dinner parties, but as the city started to rebound in the 1970s, Philadelphia saw a restaurant renaissance.
Split into simpler sentences: The city saw a large emigration into the suburbs, and fine dining could be found mainly in private clubs and dinner parties. But as the city started to rebound in the 1970s, Philadelphia saw a restaurant renaissance.