Complex sentence: The earthquake is generally known as the great Kefalonia Earthquake; yet in the capital of Zakynthos too, only two buildings survived the earthquake and the rest of the island's capital had to be rebuilt.
Split into simpler sentences: The earthquake is generally known as the great Kefalonia Earthquake, but damage was very heavy in the capital of Zakynthos. Only two buildings survived the earthquake there and the rest of the island's capital had to be rebuilt.