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: What was the name of Ronny Graham's character on Chico and the Man? Passage:As a writer, Graham penned seven episodes of M*A*S*H (and guest starred as Sgt. Gribble in the episode "Your Hit Parade," for which he was program consultant) and nine episodes of The Brady Bunch Hour. He also co-wrote the screenplays for the Mel Brooks' films To Be or Not to Be (1983) and Spaceballs (1987), appearing onscreen as Sondheim in the former and the Minister in the latter. His other film credits included roles in Dirty Little Billy (1972), Won Ton Ton, the Dog Who Saved Hollywood (1976), The World's Greatest Lover (1977) and History of the World, Part I (1981). He had a recurring role on Chico and the Man and made guest appearances on Murder She Wrote, Picket Fences, and Chicago Hope. He was a frequent guest on The Tonight Show Starring Johnny Carson. Graham played the character who dropped the clapperboard repeatedly in a famous, 1969 Alka Selzer "Spicy Meatball" advertisement and played the part of "Mr. Dirt" on a series of commercials for Mobil Oil in the 1970s. In 1996, he appeared as the character Louis Foukold in the screen adaptation of the Jon Robin Baitz play The Substance of Fire.


b