Generate a correct and concise answer for the question based on the words in the context.

Ex Input:
Context : Empress Gongrangzhang (恭讓章皇后), personal name Hu Shanxiang (胡善祥) (died 1443), married the Xuande Emperor in 1417 but was deposed in 1428, mother of Princess Shunde Empress Xiaogongzhang (孝恭章皇后), family name Sun (孫) (died September/October 1462), daughter of Sun Zouzhong (孫鄒忠), initially created an Imperial Concubine (嬪) in 1417, elevated to the rank of Noble Consort (貴妃) upon the Xuande Emperor's accession in 1425, created empress in 1428 after the deposition of Hu Shanxiang, became Empress Dowager (皇太后) upon the accession of her son, created Empress Dowager Shangsheng (上聖皇太后) in December 1449, created Empress Dowager Shengliecishou (聖烈慈壽皇太后), mother of the Zhengtong Emperor and Princess Changde Empress Dowager Xiaoyi (孝翼太后), family name Wu (吳) (died December 1461), daughter of Wu An (吳安), granddaughter of Wu Yanming (吳彥名), created Consort Xian (賢妃) in 1428, initially given the posthumous name Consort Rongsixian (榮思賢妃), posthumously honored as Empress Dowager Xiaoyi by the Chongzhen Emperor, mother of the Jingtai Emperor Imperial Concubine Guo Ai (嬪郭愛), personal name Guo Ai (郭愛), courtesy name Shanli (善理) (died 1435), was buried with the Xuande Emperor after his death 
Question : What is Xuande Emperor's spouse's name?

Ex Output:
Empress Xiaogongzhang


Ex Input:
Context : Otto Preminger died in New York City, New York in 1986, aged 80, from lung cancer while suffering from Alzheimer's disease. 
Question : What medical condition did Otto Preminger have at the end of his life?

Ex Output:
Alzheimer's disease


Ex Input:
Context : According to the contemporary Chronicle of Fredegar, the Battle of Wogastisburg was a battle between Slavs (Sclav, cognomento Winidi) under King Samo and Franks under King Dagobert I in 631. 
Question : What is the date when Battle of Wogastisburg happened?

Ex Output:

631