<prompt> Qedela umusho olandelayo:  <response>: Ukuvukela kukaPeter Delyan, owazithwesa yena uqobo uCzar uPeter wamaBulgaria, kwenza okunye ukuhlasela kweByzantium ngokumelene neDuklja kungenzeki njengoba abaseByzantium manje base behlala ngokuqhubekela phambili kweBulgaria. 