Question:
Who was the head of state of Nazi Germany in May, 1945?

Context:
 Karl Dönitz is the head of the state of Nazi Germany from Apr, 1945 to May, 1945. 
 Adolf Hitler is the head of the state of Nazi Germany from Aug, 1934 to Apr, 1945. 
 Paul von Hindenburg is the head of the state of Nazi Germany from May, 1925 to Aug, 1934.

Answer:
Question:
Who was the head of state of Nazi Germany in May, 1945?

Context:
 Karl Dönitz is the head of the state of Nazi Germany from Apr, 1945 to May, 1945. 
 Adolf Hitler is the head of the state of Nazi Germany from Aug, 1934 to Apr, 1945. 
 Paul von Hindenburg is the head of the state of Nazi Germany from May, 1925 to Aug, 1934.

Answer:
user
Karl Dönitz
assistant
Question:
Who was the head of state of Nazi Germany in May, 1945?

Context:
 Karl Dönitz is the head of the state of Nazi Germany from Apr, 1945 to May, 1945. 
 Adolf Hitler is the head of the state of Nazi Germany from Aug, 1934 to Apr, 1945. 
 Paul von Hindenburg is the head of the state of Nazi Germany from May, 1925 to Aug, 1934.

Answer:
user
Adolf Hitler
Paul von Hindenburg
assistant
Question:
Who was the head of state of Nazi Germany in May, 1945?

Context:
 Karl Dönitz is the head of the state of Nazi Germany from Apr, 1945 to May, 1945. 
 Adolf Hitler is the head of the state of Nazi Germany from Aug, 1934 to Apr, 1945. 
 Paul von Hindenburg is the head of the state of Nazi Germany from May, 1925 to Aug, 1934.

Answer:
user
Karl Dönitz
assistant