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.

Example input: Question: When did the operation during which the 704th dropped supplies to allied troops near Nijmegen begin? Passage: The group was occasionally diverted from strategic missions to carry out air support and interdiction missions. It supported Operation Overlord, the invasion of Normandy by attacking transportation targets, including bridges, along with airfields and strong points in France. On D Day, the squadron and the rest of the 446th Group led the first heavy bomber mission of the day. The 446th aided ground forces at Caen and Saint-Lo during July by hitting bridges, gun batteries, and enemy troops. During Operation Market Garden, the attempt to seize a bridgehead across the Rhine in the Netherlands, the 704th dropped supplies to allied troops near Nijmegen. It struck lines of communications during the Battle of the Bulge. During Operation Varsity in March 1945, it supplied ground and airborne troops near Wesel. The squadron flew its last combat mission on 25 April 1945 against Salzburg, Austria. The group had flown 273 missions and had lost 58 aircraft during the war,
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Example output: b
Example explanation: The passage describes the 704th's actions during Operation Market Garden so only information about the operation is needed.
Q: Question: Who was Thor's alter ego? Passage:Defeating the aliens, Thor shares a double life with his alter ego: treating the ill in a private practice with nurse and eventual love Jane Foster, and defending humanity from evil. Thor's presence on Earth almost immediately attracts the attention of his adoptive brother and enemy Loki. Loki is responsible for the emergence of three of Thor's principal foes: the Absorbing Man; the Destroyer, and the Wrecker. On one occasion, Loki's tactics were accidentally beneficial although successful in using an illusion of the Hulk to draw Thor into battle, it results in the formation of the superhero team the Avengers, of which Thor is a founding and longstanding member. Thor's other early foes include Zarrko, the Tomorrow Man; the Radioactive Man; the Lava Man; the Cobra; Mister Hyde; the Enchantress and the Executioner, and the Grey Gargoyle.

A:
b