Leila Ben Youssef was born in this city less than 10mi away from what border?
Leila Ben Youssef Leila Maryam Ben Youssef (Arabic: ليلى مريم بن يوسف‎ ‎ ; born November 13, 1981 in Sidney, Montana, United States) is an American-born Tunisian pole vaulter. She is a multiple-time Tunisian record holder in the pole vault, and a gold medalist at the 2007 All-Africa Games in Algiers, Algeria. She also holds a dual citizenship, and chose to represent her father's birthplace Tunisia at numerous sporting events, including the Olympic games.
Seiyun Say'un — (also transliterated as "Saywun" or "Seiyun"; Arabic: سيئون‎ ‎   ] , ] ) — is a city in Hadhramaut region, Hadhramaut Governorate of Yemen. It is located in the middle of the Hadhramaut valley, about 360km from Mukalla, the capital of Mukalla District and the largest city in the area, via western route. It is also 12km away from Shibam and 35km away from Tarim, other large cities in Hadramaut valley.