Teacher: In this task, you're given a question, along with a context passage. The passage will not have a direct answer to the question, but can include some information and a clue for the answer. Assuming you can only obtain information about one entity in the passage, your job is to determine whether information from the passage can be used to answer the question. Indicate your choice as 'a' for Yes or 'b' for No.
Teacher: Now, understand the problem? If you are still confused, see the following example:
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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Solution: a
Reason: The passage describes the 704th's actions during Operation Market Garden so only information about the operation is needed.

Now, solve this instance: Question: How many years did the war last? Passage:The war ended in May 1945. A couple of weeks earlier had been one of thousands drowned off the coast at Lubeck when a liner/prison ship on which he was being held was sunk by the British. The central part of what remained of Germany (apart from the western part of Berlin) now found itself designated the Soviet occupation zone: political administration and reconstruction would take place under Soviet military administration. Charlotte Bischoff obtained a secretarial position with the Soviet occupation forces in May 1945. She then worked at a succession of jobs with the Free German Trade Union Federation (Freier Deutscher Gewerkschaftsbund, FDGB). The entire Soviet zone would be reformed as the German Democratic Republic, formally founded only in October 1949, but already in April 1946 the contentious merger between the old Communist Party and the Moderate-left SPD created the precondition for a return to one-party rule. Bischoff was one of thousands of former Communists who now lost no time in signing their membership over to the new Socialist Unity Party (SED /) '). Following internal disagreements in the FDGB, in May 1947 Bischoff switched her focus to "Social Help: Greater Berlin" ('), a city-wide welfare organisation with close links to East Germany's SED (party), staying with that organisation till September 1950, after which she went back to working with the FDGB. In 1957 she started work, on a free-lance basis, with the MarxismLeninism Institute of the powerful Party Central Committee. Here she was involved in compiling the official "History of the German Workers' Movement" (). When the volume later appeared she was frequently identified in it but only as the "representative of the Central Committee". Her own contribution to the volume and the collected supporting documents remained unacknowledged during the GDR years. The writer Eva-Maria Siegel thinks this was probably because she included various corrections to the official historical ideology, notably in respect of the contribution of .

Student:
b