Complex sentence: St Ann's Church, attributed to Wren or one of his pupils, was built in 1712 in St Ann's Square which became the fashionable area of town and seven other churches were built during the 18th century, none of which survives.
Split into simpler sentences: St Ann's Church, attributed to Wren or one of his pupils, was built in 1712 in St Ann's Square which became the fashionable area of town. Seven other churches were built during the 18th century, none of which survives.