Complex sentence: As well as the 20 known graves, there are memorials to a further 196 soldiers and sailors who are known to be buried in the cemetery.In it's overall capacity, the gravesite contains 696 soldiers who are buried at this site.
Split into simpler sentences: As well as the 20 known graves, there are memorials to a further 196 soldiers and sailors who are known to be buried in the cemetery. In its overall capacity, the gravesite contains 696 soldiers who are buried at this site.