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: Did the diesel engines used for power and cruising come from the same manufacturer? Passage:German Type IXD2 submarines were considerably larger than the original Type IXs. U-861 had a displacement of when at the surface and while submerged. The U-boat had a total length of , a pressure hull length of , a beam of , a height of , and a draught of . The submarine was powered by two MAN M 9 V 40/46 supercharged four-stroke, nine-cylinder diesel engines plus two MWM RS34.5S six-cylinder four-stroke diesel engines for cruising, producing a total of for use while surfaced, two Siemens-Schuckert 2 GU 345/34 double-acting electric motors producing a total of for use while submerged. She had two shafts and two propellers. The boat was capable of operating at depths of up to .

Example Output: a

Example Input: Question: Which of the schools that Ari Brynjolfsson attended or worked at has existed the longest? Passage:Ari Brynjolfsson was born in Akureyri, Iceland, one of the seven children of Brynjólfur Sigtryggsson and Guðrún Rósinkarsdóttir from Hörgárdalur. He lived in Krossanes, Eyjafjörður and graduated from Menntaskólinn á Akureyri in 1948, then studied nuclear physics at the Niels Bohr Institute, University of Copenhagen, Denmark, from 1948 to 1954, gaining his PhD, with a thesis which dealt with a device he had constructed for accurately measuring magnetism in rocks. Following this he became a special research fellow of the University of Iceland from 1954 to 1955, then an Alexander von Humboldt fellow of the University of Göttingen, Germany, from 1955 to 1957. While at Göttingen he contributed important work in magnetic moments, using a self-devised instrument with which he and others provided the strongest evidence to that date for magnetic field reversals.

Example Output: a

Example Input: Question: How many Germans died in the raid in which the Z33 was damaged? Passage:Z33 was a Type 1936A (Mob) destroyer built for the Kriegsmarine (German Navy) during World War II. Completed in 1943, the ship was damaged during the raid on the island of Spitsbergen in September and spent all of 1944 in Norwegian waters. She was damaged by British aircraft attacking the battleship in July. Z33 escorted troop convoys from northern Norway when the Germans began evacuating the area beginning in October. She ran aground in early 1945 as she was sailing for the Baltic and was badly damaged. While the ship was being towed to port for repairs, she and her escorts were attacked by Allied fighter-bombers. Z33 finally reached the Baltic in early April, but was reduced to reserve for lack of fuel. The ship was transferred to Cuxhaven and decommissioned shortly before the end of the war.

Example Output:
b