question: What is the date of death of Albert Iv, Prince Of Anhalt-Köthen's father?
context: [["Magnus, Prince of Anhalt-K\u00f6then", ["Magnus, Prince of Anhalt- K\u00f6then( 1455 \u2013 29 October 1524) was a German prince of the House of Ascania and ruler of the principality of Anhalt- K\u00f6then.", "He was the third( but eldest surviving) son of Adolph I, Prince of Anhalt- K\u00f6then, by his wife Cordula, daughter of Albert III, Count of Lindau- Ruppin."]], ["Augustus Christian Frederick, Duke of Anhalt-K\u00f6then", ["Augustus Christian Frederick of Anhalt-K\u00f6then (K\u00f6then, 18 November 1769 \u2013 Schloss Geuz, 5 May 1812), was a German prince of the House of Ascania, ruler of the principality of Anhalt-K\u00f6then, and from 1806 the first \"Duke of Anhalt-K\u00f6then.\"", "He was the eldest son of Karl George Lebrecht, Prince of Anhalt-K\u00f6then, by his wife Louise Charlotte, daughter of Frederick, Duke of Schleswig-Holstein-Sonderburg-Gl\u00fccksburg."]], ["Adolph I, Prince of Anhalt-K\u00f6then", ["Adolph I, Prince of Anhalt- K\u00f6then( died Zerbst, 28 August 1473), was a German prince of the House of Ascania and ruler of the principality of Anhalt- K\u00f6then.", "He was the eldest son of Albert IV, Prince of Anhalt- K\u00f6then, by his first wife Elisabeth, daughter of Gebhard III, Count of Mansfeld."]], ["Albert VI, Prince of Anhalt-K\u00f6then", ["Albert VI, Prince of Anhalt- K\u00f6then( died 9 January 1475) was a German prince of the House of Ascania and ruler of the principality of Anhalt- K\u00f6then.", "He was the youngest son of Albert IV, Prince of Anhalt- K\u00f6then, but the eldest child of his second wife Elisabeth, daughter of Gebhard XI, Count of Querfurt."]], ["Waldemar V, Prince of Anhalt-K\u00f6then", ["Waldemar V, Prince of Anhalt- K\u00f6then( died 1436) was a German prince of the House of Ascania and ruler of the principality of Anhalt- K\u00f6then.", "He was the second son of Albert IV, Prince of Anhalt- K\u00f6then, by his first wife Elisabeth, daughter of Gebhard III, Count of Mansfeld."]], ["Adolph II, Prince of Anhalt-K\u00f6then", ["Adolph II, Prince of Anhalt- K\u00f6then( 16 October 1458 \u2013 24 March 1526, in Merseburg), was a German prince of the House of Ascania and ruler of the principality of Anhalt- K\u00f6then.", "A Roman Catholic Bishop of Merseburg, he remained until his death a staunch opponent of Martin Luther.", "He was the fifth and youngest son of Adolph I, Prince of Anhalt- K\u00f6then, by his wife Cordula, daughter of Albert III, Count of Lindau- Ruppin."]], ["Philip, Prince of Anhalt-K\u00f6then", ["Philip, Prince of Anhalt-K\u00f6then (31 May 1468 \u2013 13 November 1500) was a German prince of the House of Ascania and ruler of the principality of Anhalt-K\u00f6then.", "He was the only son of Albert VI, Prince of Anhalt-K\u00f6then, by his wife Elisabeth, daughter of G\u00fcnther II, Count of Mansfeld."]], ["Albert IV, Prince of Anhalt-K\u00f6then", ["Albert IV, Prince of Anhalt-K\u00f6then", "(d. Coswig, 24 November 1423), was a German prince of the House of Ascania and ruler of the principality of Anhalt-Zerbst until 1396, when he became the first ruler of the principality of Anhalt-K\u00f6then.", "He was the second son of John II, Prince of Anhalt-Zerbst, by his wife Elisabeth, daughter of John I, Count of Henneberg-Schleusingen."]], ["Emmanuel Lebrecht, Prince of Anhalt-K\u00f6then", ["Emmanuel Lebrecht of Anhalt-K\u00f6then (K\u00f6then, 20 May 1671 \u2013 K\u00f6then, 30 May 1704), was a German prince of the House of Ascania and ruler of the principality of Anhalt-K\u00f6then.", "He was the only child of Emmanuel, Prince of Anhalt-K\u00f6then, by his wife Anna Eleonore, daughter of Henry Ernest, Count of Stolberg."]], ["John II, Prince of Anhalt-Zerbst", ["John II, Prince of Anhalt-Zerbst (died 11 April 1382) was a German prince of the House of Ascania and ruler of the principality of Anhalt-Zerbst.", "He was the youngest son of Albert II, Prince of Anhalt-Zerbst, by his second wife Beatrix, daughter of Rudolf I, Elector of Saxony and Duke of Saxe-Wittemberg."]]]
supporting_facts: [["Albert IV, Prince of Anhalt-K\u00f6then", 2], ["John II, Prince of Anhalt-Zerbst", 0]]
evidences: [["Albert IV, Prince of Anhalt-K\u00f6then", "father", "John II, Prince of Anhalt-Zerbst"], ["John II, Prince of Anhalt-Zerbst", "date of death", "11 April 1382"]]
answer: 11 April 1382