Question: Who is Princess Alexandra Of Sayn-Wittgenstein-Berleburg's father?

Knowledge 1: Princess Alexandra of Sayn-Wittgenstein-Berleburg
Princess Alexandra of Sayn-Wittgenstein-Berleburg, Countess Ahlefeldt-Laurvig-Bille (Alexandra Rosemarie Ingrid Benedikte; born 20 November 1970), is the first daughter and second of three children of Prince Richard of Sayn-Wittgenstein-Berleburg and Princess Benedikte of Denmark.Under the succession rules set by King Frederik IX, since Princess Benedikte and her children, including Princess Alexandra, have not taken up permanent residence in Denmark, they have effectively waived their place in the line of succession to the Danish throne.Since 19 May 1998, Alexandra has been a Danish citizen. [SEP] Knowledge 2: Princess Benedikte of Denmark
Princess Benedikte of Denmark, Princess of Sayn-Wittgenstein-Berleburg (Benedikte Astrid Ingeborg Ingrid, born 29 April 1944) is the second daughter and child of King Frederick IX and Queen Ingrid of Denmark.She is the younger sister of the reigning Queen of Denmark, Margrethe II, and the older sister of Queen Anne-Marie of Greece.Princess Benedikte often represents her elder sister at official or semi-official events.She and her late husband, Richard, 6th Prince of Sayn-Wittgenstein-Berleburg, have three children.Princess Benedikte is currently 11th in the line of succession to the Danish throne.
Knowledge 1: Princess Alexandra of Sayn-Wittgenstein-Berleburg
Princess Alexandra of Sayn-Wittgenstein-Berleburg, Countess Ahlefeldt-Laurvig-Bille (Alexandra Rosemarie Ingrid Benedikte; born 20 November 1970), is the first daughter and second of three children of Prince Richard of Sayn-Wittgenstein-Berleburg and Princess Benedikte of Denmark.Under the succession rules set by King Frederik IX, since Princess Benedikte and her children, including Princess Alexandra, have not taken up permanent residence in Denmark, they have effectively waived their place in the line of succession to the Danish throne.Since 19 May 1998, Alexandra has been a Danish citizen. [SEP] Knowledge 2: Richard, 6th Prince of Sayn-Wittgenstein-Berleburg
Richard, 6th Prince of Sayn-Wittgenstein-Berleburg (Richard Casimir Karl August Robert Konstantin; 29 October 1934 – 13 March 2017) was the head of the House of Sayn-Wittgenstein-Berleburg and husband of Princess Benedikte of Denmark.
Knowledge 1: Richard, 6th Prince of Sayn-Wittgenstein-Berleburg
Richard, 6th Prince of Sayn-Wittgenstein-Berleburg (Richard Casimir Karl August Robert Konstantin; 29 October 1934 – 13 March 2017) was the head of the House of Sayn-Wittgenstein-Berleburg and husband of Princess Benedikte of Denmark. [SEP] Knowledge 2: Princess Benedikte of Denmark
Princess Benedikte of Denmark, Princess of Sayn-Wittgenstein-Berleburg (Benedikte Astrid Ingeborg Ingrid, born 29 April 1944) is the second daughter and child of King Frederick IX and Queen Ingrid of Denmark.She is the younger sister of the reigning Queen of Denmark, Margrethe II, and the older sister of Queen Anne-Marie of Greece.Princess Benedikte often represents her elder sister at official or semi-official events.She and her late husband, Richard, 6th Prince of Sayn-Wittgenstein-Berleburg, have three children.Princess Benedikte is currently 11th in the line of succession to the Danish throne.

Answer: Richard, 6th Prince of Sayn-Wittgenstein-Berleburg