Complex sentence: It contains a ring of 6 bells, the back 5 bells are the last ring of bells out of the foundry by William Knight and the treble was added in 1897, to commemorate the Golden Jubilee of Queen Victoria.
Split into simpler sentences: It contains a ring of six bells, the back five of which are the last ring of bells out of the foundry of William Knight. The treble was added in 1897, to commemorate the Golden Jubilee of Queen Victoria.