Task: Question Answering
Input (English): Context : Yuan Leshang (Chinese: 元樂尚; born 565), later Buddhist nun name Huasheng (華勝), was a concubine of Emperor Xuan of Northern Zhou, an emperor of the Chinese/Xianbei dynasty Northern Zhou. 
Question : What is Yuan Leshang's spouse's name?
Output (English): Emperor Xuan of Northern Zhou