Complex sentence: Eduard drives Paul round the region, and they stop in a bar which, unknowingly to them, Ernst sits near by proudly showing his latest flame diamonds he has attained through various misdemeanours since the war has ended.
Split into simpler sentences: Eduard drives Paul round the region, and they stop at a bar. Unknowingly to them, Ernst sits nearby proudly showing his latest flame diamonds he has attained through various misdemeanours since the war has ended.