In this task, you're given a question, along with a context passage which has extra information available on certain terms mentioned in it, i.e., the proper nouns in the passage. Your job is to determine whether information from more than one term is needed to answer the question. Indicate your choice as `a` for Yes or `b` for No.

Ex Input:
Question: How many nations comprise the organization that Albania complained to concerning Royal Navy conducting mine-clearing operations in Albanian territorial waters, Passage:The Corfu Channel Incident refers to three separate incidents involving Royal Navy ships in the Straits of Corfu which took place in 1946, and it is considered an early episode of the Cold War. During the first incident, Royal Navy ships came under fire from Albanian fortifications. The second incident involved Royal Navy ships striking mines and the third incident occurred when the Royal Navy conducted mine-clearing operations in the Corfu Channel, but in Albanian territorial waters, and Albania complained about them to the United Nations. This series of incidents led to the Corfu Channel Case, where the United Kingdom brought a case against the People's Republic of Albania to the International Court of Justice. Because of the incidents, Britain, in 1946, broke off talks with Albania aimed at establishing diplomatic relations between the two countries. Diplomatic relations were only restored in 1991.


Ex Output:
b


Ex Input:
Question: What type of music was Rosa Papier known for? Passage:Born in what is now Opava in Silesia, Weidt was the daughter of composer and Kapellmeister Heinrich Weidt, who was one of her first teachers, along with Rosa Papier. For most of her career she was on the roster of the Vienna State Opera, beginning in 1903 and continuing until 1926. She first succeeded Sophie Sedlmair, who was retiring, and soon began sharing major Wagner roles with Anna Bahr-Mildenburg. She also became known for her portrayal of Leonore in Fidelio, and she created for Vienna the Marschallin in Der Rosenkavalier. For Milan she was the first Kundry. Between 1908 and 1910 she appeared in Munich. During the 1910–11 season Weidt was on the roster of the Metropolitan Opera, singing Brünnhilde in both Die Walküre and Siegfried and Elisabeth in Tannhäuser. In 1912 she was singing in Buenos Aires. She won praise from Leoš Janáček for her portrayal of Kostelnička in Jenůfa at its Vienna premiere in 1918. The following year she created the role of the Nurse in Die Frau ohne Schatten for the same company. Weidt died in Vienna.


Ex Output:
b


Ex Input:
Question: How far is it from the beginning of the glen to it's end? Passage:Glen Tilt (Scottish Gaelic: Gleann Teilt) is a glen in the extreme north of Perthshire, Scotland. Beginning at the confines of Aberdeenshire, it follows a South-westerly direction excepting for the last 4 miles, when it runs due south to Blair Atholl. It is watered throughout by the Tilt, which enters the Garry after a course of 14 miles, and receives on its right the Tarf, which forms some beautiful falls just above the confluence, and on the left the Fender, which has some fine falls also. The attempt of George Murray, 6th Duke of Atholl to close the glen to the public was successfully contested by the Scottish Rights of Way Society in 1847. The massive mountain of Beinn a' Ghlò and its three Munros Càrn nan Gabhar (1129 m), Bràigh Coire Chruinn-bhalgain (1070 m) and Càrn Liath (975) dominate the glen's eastern lower half.


Ex Output:

a