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.

[Q]: Question: What country did Kubrat attend the University of Navarra in? Passage:After completing his primary and secondary education at the Lycee Francais in Madrid, Kubrat studied between 1984 and 1990 at the University of Navarra in Pamplona, where he obtained a Licentiate in Medicine and Surgery. After his graduation, he worked for five years as a resident physician at Puerta de Hierro Clinic in Madrid, where he made his expertise as a general surgeon. Subsequently he worked for a year at the St Mark's Hospital and Northwick Park Hospital and further specialized as a surgeon in proctology. Kubrat worked between 1997 and 2003 as a colorectal surgeon at the Ruber International Clinic in Madrid and was in charge of the Ambulatory Surgery Unit. Since September 2003, he became Head of the Colorectal Unit at the San Camillo Hospital in Madrid, where he also acts as Director of the Team Care Management since June 2006. He was director of Shared Medical Systems between 1999 and 2000, and is currently also part of the advisory board of Tokuda Hospital (Sofia, Bulgaria) and a Consultant for Mensor Health Care, S.L in Madrid.

[A]: b

[Q]: Question: Which president saw the establishment of the recreation area that contains the lower of the San Juan River? Passage:From there it flows west through the Navajo Nation, turning northwest near Shiprock and its namesake monolith, crossing very briefly back into southwest Colorado (within half a mile (0.8km) of the Four Corners quadripoint) before entering southeastern Utah. West of Bluff, Utah the river slices through the Comb Ridge and enters a series of rugged winding canyons, often over in depth. The lower of the San Juan River, in a remote portion of the Glen Canyon National Recreation Area, are flooded by Lake Powell, which is formed by Glen Canyon Dam on the Colorado River. The San Juan joins the Colorado in San Juan County, Utah at a point about to the north of Navajo Mountain and northeast of Page, Arizona.

[A]: a

[Q]: Question: How old was Bela Von Kehrling when Hungary lost their first semifinal to Great Britain? Passage:Hungary competed in its first Davis Cup in 1924 and was stuck in the first round for five years (not counting an automatic bye). They broke the curse with the first and convincing 50 win against Norway realized by Bela Von Kehrling in the major part. In 1929 they cruised to their first semifinal losing to Great Britain in a close 32 (two singles absolved by Von Kehrling) falling only in the fifth rubber. It took another 20 years to relive the success in 1949 (including the five-year vacancy period during the Second World War) this time losing to France in the semis. The core of the team was 1947 French Open champion Jozsef Asboth. In 1956 Hungary was absent from the Cup because of the Hungarian Revolution of 1956. In 1966 a record attendance visited the Hungary-Great Britain quarterfinal in Budapest, where a crowd of 20,000 spectators supported the Andras Szikszay-Istvan Gulyas Davis Cup team during the four-day tie. A tough weekend started on Saturday 14 May for the multiple champions Brits, who had three-time Major semifinalist Mike Sangster losing their first match in five sets to Istvan Gulyas. They turned to 21 on the same day but on Sunday Andras Szikszay also defeated Sangster leaving the decision to the fifth final tie, which was postponed to Monday. In a four set match Gulyas started well taking the first one 1816, but Roger Taylor finished in three easier sets. English team captain Headley Baxter remarked that although they won they hadn't been forced into such a tough fight for years. Just two weeks later Gulyas had his first and lone Grand Slam final in the French Open losing only to Tony Roche of Australia.

[A]:
b