Complex sentence: The cathedral was first bombed in April 1944, taking 7 bombs that narrowly missed destroying a key pillar of the lantern tower, but damaged much the south aisle and destroyed two rose windows.
Split into simpler sentences: The cathedral was first bombed in April 1944, taking 7 bombs. The bombs narrowly missed destroying a key pillar of the lantern tower, but damaged much the south aisle and destroyed two rose windows.