Question: What is the place of birth of Arne Selberg's father?

Knowledge 1: Arne Selberg
Arne Selberg (11 August 1910 – 25 May 1989) was a Norwegian civil engineer.He was born in Langesund as the son of Ole Michael Ludvigsen Selberg and Anna Kristina Brigtsdatter Skeie.He was twin brother of Sigmund Selberg and brother of Henrik Selberg and Atle Selberg.He was appointed professor at the Norwegian Institute of Technology from 1949 to 1979, and served as rector from 1963 to 1969.His speciality was design of suspension bridges.During the occupation of Norway by Nazi Germany Selberg cooperated with the XU intelligence network.He was a member of various commissions and board member of several institutions and companies.He was decorated Commander of the Order of St. Olav in 1966. [SEP] Knowledge 2: Ole Michael Ludvigsen Selberg
Ole Michael Ludvigsen Selberg (7 October 1877 – 11 December 1950) was a Norwegian mathematician and educator.He was born in Flora.He was married to Anna Kristina Brigtsdatter Skeie, and the father of Sigmund, Arne, Henrik and Atle Selberg.His thesis from 1925 treated the theory of algebraic equations.Three of his sons became professors of mathematics, and one was professor of engineering.During the occupation of Norway by Nazi Germany Selberg was a member of the Nazi party Nasjonal Samling.He is also known for his large collection of mathematics literature, which has later been donated to the Norwegian University of Science and Technology.
Knowledge 1: Arne Selberg
Arne Selberg (11 August 1910 – 25 May 1989) was a Norwegian civil engineer.He was born in Langesund as the son of Ole Michael Ludvigsen Selberg and Anna Kristina Brigtsdatter Skeie.He was twin brother of Sigmund Selberg and brother of Henrik Selberg and Atle Selberg.He was appointed professor at the Norwegian Institute of Technology from 1949 to 1979, and served as rector from 1963 to 1969.His speciality was design of suspension bridges.During the occupation of Norway by Nazi Germany Selberg cooperated with the XU intelligence network.He was a member of various commissions and board member of several institutions and companies.He was decorated Commander of the Order of St. Olav in 1966. [SEP] Knowledge 2: Sigmund Selberg
Sigmund Selberg( 11 August 1910 – 20 April 1994) was a Norwegian mathematician.He was born in Langesund as the son of Ole Michael Ludvigsen Selberg and Anna Kristina Brigtsdatter Skeie.He was twin brother of Arne Selberg and brother of Henrik Selberg and Atle Selberg.He was appointed professor of mathematics at the Norwegian Institute of Technology from 1947 to 1977.His works mainly focused on the distribution of prime numbers.
Knowledge 1: Arne Selberg
Arne Selberg (11 August 1910 – 25 May 1989) was a Norwegian civil engineer.He was born in Langesund as the son of Ole Michael Ludvigsen Selberg and Anna Kristina Brigtsdatter Skeie.He was twin brother of Sigmund Selberg and brother of Henrik Selberg and Atle Selberg.He was appointed professor at the Norwegian Institute of Technology from 1949 to 1979, and served as rector from 1963 to 1969.His speciality was design of suspension bridges.During the occupation of Norway by Nazi Germany Selberg cooperated with the XU intelligence network.He was a member of various commissions and board member of several institutions and companies.He was decorated Commander of the Order of St. Olav in 1966. [SEP] Knowledge 2: Obata Toramori
He was the father of Obata Masamori.

Answer: Flora