Definition: 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.
Input: Question: Who was the champion of the race in which Surtees qualified 15th and finished eighth? Passage:Surtees was formed by John Surtees after he left BRM to start his own team. He bought a McLaren M7C so that he could use it until the TS7 was ready. The car made its debut at the 1970 British Grand Prix with Surtees driving. He qualified 19th and retired with an oil pressure failure. In Germany, Surtees qualified 15th and was classified in ninth, although his race ended in an engine failure. The Austrian Grand Prix saw Surtees qualify 12th and retire when his engine blew. In Italy, the Englishman qualified 10th and retired when an electrical failure stalled the car at the start. The Canadian Grand Prix saw Surtees qualify and finish fifth. The team owner was joined by Derek Bell as a driver for the United States Grand Prix. Surtees qualified eighth and Bell 13th. The 1964 World Champion retired when his engine blew and Bell finished sixth. In Mexico, the team only entered Surtees. He qualified 15th and finished eighth. 


b