Question:
Who was the head of state of Duchy of Cleves in Dec, 1535?

Context:
 John II, Duke of Cleves is the head of the state of Duchy of Cleves from Jan, 1481 to Jan, 1521. 
 Adolph I is the head of the state of Duchy of Cleves from Jan, 1417 to Jan, 1448. 
 John I, Duke of Cleves is the head of the state of Duchy of Cleves from Jan, 1448 to Jan, 1481. 
 John III, Duke of Cleves is the head of the state of Duchy of Cleves from Jan, 1521 to Jan, 1539. 
 William, Duke of Jülich-Cleves-Berg is the head of the state of Duchy of Cleves from Jan, 1539 to Jan, 1592. 
 John William, Duke of Jülich-Cleves-Berg is the head of the state of Duchy of Cleves from Jan, 1592 to Jan, 1609.

Answer:
Question:
Who was the head of state of Duchy of Cleves in Dec, 1535?

Context:
 John II, Duke of Cleves is the head of the state of Duchy of Cleves from Jan, 1481 to Jan, 1521. 
 Adolph I is the head of the state of Duchy of Cleves from Jan, 1417 to Jan, 1448. 
 John I, Duke of Cleves is the head of the state of Duchy of Cleves from Jan, 1448 to Jan, 1481. 
 John III, Duke of Cleves is the head of the state of Duchy of Cleves from Jan, 1521 to Jan, 1539. 
 William, Duke of Jülich-Cleves-Berg is the head of the state of Duchy of Cleves from Jan, 1539 to Jan, 1592. 
 John William, Duke of Jülich-Cleves-Berg is the head of the state of Duchy of Cleves from Jan, 1592 to Jan, 1609.

Answer:
user
John III, Duke of Cleves
assistant
Question:
Who was the head of state of Duchy of Cleves in Dec, 1535?

Context:
 John II, Duke of Cleves is the head of the state of Duchy of Cleves from Jan, 1481 to Jan, 1521. 
 Adolph I is the head of the state of Duchy of Cleves from Jan, 1417 to Jan, 1448. 
 John I, Duke of Cleves is the head of the state of Duchy of Cleves from Jan, 1448 to Jan, 1481. 
 John III, Duke of Cleves is the head of the state of Duchy of Cleves from Jan, 1521 to Jan, 1539. 
 William, Duke of Jülich-Cleves-Berg is the head of the state of Duchy of Cleves from Jan, 1539 to Jan, 1592. 
 John William, Duke of Jülich-Cleves-Berg is the head of the state of Duchy of Cleves from Jan, 1592 to Jan, 1609.

Answer:
user
John II, Duke of Cleves
William, Duke of Jülich-Cleves-Berg
John William, Duke of Jülich-Cleves-Berg
Adolph I
John I, Duke of Cleves
assistant
Question:
Who was the head of state of Duchy of Cleves in Dec, 1535?

Context:
 John II, Duke of Cleves is the head of the state of Duchy of Cleves from Jan, 1481 to Jan, 1521. 
 Adolph I is the head of the state of Duchy of Cleves from Jan, 1417 to Jan, 1448. 
 John I, Duke of Cleves is the head of the state of Duchy of Cleves from Jan, 1448 to Jan, 1481. 
 John III, Duke of Cleves is the head of the state of Duchy of Cleves from Jan, 1521 to Jan, 1539. 
 William, Duke of Jülich-Cleves-Berg is the head of the state of Duchy of Cleves from Jan, 1539 to Jan, 1592. 
 John William, Duke of Jülich-Cleves-Berg is the head of the state of Duchy of Cleves from Jan, 1592 to Jan, 1609.

Answer:
user
John III, Duke of Cleves
assistant