Task: Question Answering
Input (English): Context : Andrzej Jastrzębiec, also known as Andrzej Wasilko or Andrzej Polak, (died 1398) was a Polish Catholic priest and diplomat, a first bishop of Seret and of Vilnius. 
Question : On what date did Andrzej Jastrzębiec die?
Output (English): 1398