 Complete the following phrase:  Until the 1800s this was a village called Türbedere. Türbe is the Turkish for tomb and the village took its name from the tomb of the eldest son of sultan Bayezid I, Süleyman Çelebi, who was murdered here in 1410 when fleeing from his brothers during the Ottoman Interregnum. The tomb was destroyed by Bulgarian troops when they occupied the town for nine months during the war for 