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: Is the person who discovered Pluto an American? Passage:Pluto was discovered by Clyde W. Tombaugh on 18 February 1930. When Pluto was first discovered, it was initially known as Planet X. Astronomers had been searching for another planet past Neptune, hoping to solve the dilemma of its rather irregular orbit. It is now known, however, that the perceived irregular orbit of Neptune was the result of a mathematical error because Pluto, being a planetoid smaller than our own Moon, was far too small to affect any type of gravitational pull on the gas giant. Pluto is very much a 20th-century planet and refers to the two world wars, and weapons of mass destruction, nuclear power, and a desire to totally control the world we live in. It is a planet that reveals to us the extremes we are capable of if we do not set necessary boundaries in our lives. This planet governs the compulsions in our life: those things we are compelled to do but know we should not, such as murder, rape, drug addiction, and even overeating if it is of such an extent that it threatens our health. Pluto is considered to be a higher octave of Mars, and this is evidenced by the fact that both planets co-rule Scorpio. Pluto, circling the Sun in 248 years, has a rather elliptical orbit, which means that it stays in the sign it rules, Scorpio, for a mere 9 years, and the sign of its fall, Taurus for 30! With this in mind, some astrologers believe that Pluto should rightfully rule Taurus, but for the time being it still rules Scorpio. As other trans-Neptunian object planets are discovered, however, this placement just might have to be reconsidered.


b