Question: What is the place of birth of Siri Aurdal's father?

Knowledge 1: Siri Aurdal
Siri Aurdal (born 20 October 1937 in Oslo) is a Norwegian painter, graphic designer, and sculptor.She comes from an artistic family with parents textile artist Synnøve Anker Aurdal and painter Leon Aurdal.Ludvig Eikaas was her stepfather from 1959.Although Aurdal is both a graphic designer and painter, her main field was sculpture and work with sculpture.She made her debut at the Høstutstillingen 1961 with a bust of Egil Eggen in brass.After that, she made a number of other busts of famous people, including Earle Hyman (1963) and Svend von Düring and Ludvig Eikaas (1965).In February 1969, she won an competition to decorate schools in Oslo, and in October 1972 presented the sculpture "Havbølger" at Trosterud skole.It was 12 × 6 m glass fibre tubes cut in wavy shapes which serves as a play sculpture for 100 children.In 1979, she made a large relief in aluminium for Abelhaugen train station in Oslo. [SEP] Knowledge 2: Leon Aurdal
Leon Aurdal (23 January 1890 – 25 January 1949) was a Norwegian painter.He was born in Bergen to Bastian Aurdal and Severine Grebstad.He was married twice, first to Kristmar Aurdal, and from 1944 to textile artist Synnøve Anker Aurdal.His works include "Sittende ung dame" from 1925, "Semsvatnet" from 1938, and "På lokalbåten" from 1945, all at the National Gallery of Norway.He is also represented in galleries in Bergen, Trondheim, Stavanger, Fredrikstad and Drammen.
Knowledge 1: Siri Aurdal
Siri Aurdal (born 20 October 1937 in Oslo) is a Norwegian painter, graphic designer, and sculptor.She comes from an artistic family with parents textile artist Synnøve Anker Aurdal and painter Leon Aurdal.Ludvig Eikaas was her stepfather from 1959.Although Aurdal is both a graphic designer and painter, her main field was sculpture and work with sculpture.She made her debut at the Høstutstillingen 1961 with a bust of Egil Eggen in brass.After that, she made a number of other busts of famous people, including Earle Hyman (1963) and Svend von Düring and Ludvig Eikaas (1965).In February 1969, she won an competition to decorate schools in Oslo, and in October 1972 presented the sculpture "Havbølger" at Trosterud skole.It was 12 × 6 m glass fibre tubes cut in wavy shapes which serves as a play sculpture for 100 children.In 1979, she made a large relief in aluminium for Abelhaugen train station in Oslo. [SEP] Knowledge 2: Adam Cheyer
Adam Cheyer is a co-founder of Siri Inc. and formerly a director of engineering in the iPhone group at Apple.
Knowledge 1: Siri Aurdal
Siri Aurdal (born 20 October 1937 in Oslo) is a Norwegian painter, graphic designer, and sculptor.She comes from an artistic family with parents textile artist Synnøve Anker Aurdal and painter Leon Aurdal.Ludvig Eikaas was her stepfather from 1959.Although Aurdal is both a graphic designer and painter, her main field was sculpture and work with sculpture.She made her debut at the Høstutstillingen 1961 with a bust of Egil Eggen in brass.After that, she made a number of other busts of famous people, including Earle Hyman (1963) and Svend von Düring and Ludvig Eikaas (1965).In February 1969, she won an competition to decorate schools in Oslo, and in October 1972 presented the sculpture "Havbølger" at Trosterud skole.It was 12 × 6 m glass fibre tubes cut in wavy shapes which serves as a play sculpture for 100 children.In 1979, she made a large relief in aluminium for Abelhaugen train station in Oslo. [SEP] Knowledge 2: Obata Toramori
He was the father of Obata Masamori.

Answer: Bergen