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: Were Caton and Beck both from Poland? Passage:From the bioelectricity of nerves, Marxow turned his attention, from 1876 on, to the global electrical activity of the cerebral hemispheres. Neuroanatomists had already determined at the time that its nervous tissue was also composed of cells (the neurons), with their bodies mainly located in the gray matter, and filamentary prolongations, the dendrites and the axons. Thus, it was only natural to assume that they would also display electrical activity. This important discovery, however, had not been made until that time, because many desynchronized electrical potentials with different polarities produce a cumulative global potential which is actually very small and difficult to detect with the sensitivity range of the measuring devices available at the time. Despite this, Marxow was able to prove for the first time that the peripheral stimulation of sensory organs, such as vision and hearing were able to provoke event-related small electrical potential swings on the surface of the cerebral cortex which was related to the projection of those senses. Strangely, however, Marxow did not publish his results, choosing instead to deposit them in a bank safe, with instructions to reveal them in 1883 only. Meanwhile, the first publications about what was later to be called the electroencephalogram came to light, independently demonstrated by Richard Caton (18421926), in Great Britain, and Adolf Beck (18631942) in Poland, both using laboratory animals.

Example Output: a

Example Input: Question: How long did the person who defeated Asselin when he ran for reelection in 1886 serve in office? Passage:He was born in Saint-Francois on the Ile d'Orleans, Canada East, the son of Louis Asselin and Marie Laperriere, and was educated at the Seminaire de Quebec and the Universite Laval. Asselin was called to the Quebec bar in 1870 and set up practice in Rimouski. In 1876, he married Theotiste-Malvina-Louise Derome. He served as crown prosecutor for Rimouski district in 1880 and 1881. Asselin ran unsuccessfully for a seat in the Quebec assembly in 1880, losing to Joseph Parent, and then defeated Parent in the 1881 general election. He was defeated by Edouard-Onesiphore Martin when he ran for reelection in 1886, also losing a by-election in 1889 and then elections for the Quebec assembly in Matane in 1890 and in Rimouski in 1908. Asselin was mayor of Rimouski from 1885 to 1887, was school commissioner from 1895 to 1898 and from 1903 to 1915 and was sheriff for Rimouski from 1895 to 1898. He was a founder and director of the newspaper Progres du Golfe. Asselin was president of the Rimouski Saint-Jean-Baptiste Society. In 1914, he was named a repatriation officer at Biddeford, Maine for the Canadian government, charged with encouraging former Quebec residents who had emigrated to the United States to return to Quebec. He died there seven years later at the age of 71.

Example Output: b

Example Input: Question: How long is the Tsarigrad Road in total? Passage:The garden already existed at least in the early 18th century. During the Austrian occupation of northern Serbia 1717-39, several hospitals were established in Belgrade, including the Great military hospital. Based on the Austrian plans, the hospital was set outside of the Belgrade Fortress ("Danubian" or "German Belgrade"), in the Serbian part of the city. As shown on the map of Belgrade by Nicolas Francois de Spar, the Tsarigrad Road began at the Wurttemberg Gate (Stambol Gate), at the modern Republic Square, and headed towards "Marko's cemetery" in Tasmajdan. The hospital was situated on the road's right side, where the modern Stari Dvor is located. Behind the hospital there was a large garden, predecessor of the modern park, and further behind it, across the road was the military cemetery. Later "Marko's market" developed on the spot and today it is the area surrounding the House of the National Assembly of Serbia. After Austria lost the Austro-Turkish War of 17371739, the northern Serbia, including Belgrade, was returned to the Turks. One of the provisions of the 1739 Treaty of Belgrade stated that Austria had to demolish all the fortifications and military and civilian buildings it has constructed during the occupation. Many Baroque buildings were demolished. However, Austria didn't demolish the buildings outside of the fortress walls, including the Great military hospital, which, albeit as a ruin, survived until the next Austrian occupation in 1788.

Example Output:
b