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: Consider Input: Question: How long had the largest wrestling promotion in Mexico been in existence when Guerrera first appeared for them? Passage:The combination of Guerrera's in ring skills, natural charisma and unique mask quickly landed him a regular job working for Empresa Mexicana de Lucha Libre (EMLL), Mexico's largest wrestling promotion. On September 25, 1981 Fuerza Guerrera made his first appearance at a major EMLL show as he wrestled and defeated Negro Casas on EMLL's 48th Anniversary show. On November 6, 1983 Guerrera defeated Aguila Venezolana in a tournament final to win the vacant Mexican National Lightweight Championship, the first professional wrestling championships of his career. In May, 1984 Guerrera vacated the title when he moved from the lightweight weight class (between and ) and into the Welterweight weight class (between and ). On December 3, 1985 Fuerza Guerrera captured the Mexican National Welterweight Championship when he defeated Javier Cruz. Guerrera held the title for approximately 240 days before vacating the title as he left EMLL to work for other wrestling promotions in Mexico. By late 1988 Guerrera had returned to EMLL and captured the NWA World Welterweight Championship on October 4, 1988 when he defeated Solar II and won the highest ranking title in the Welterweight division at the time. Guerrera would go on to make several successful title defenses until he lost to Águila Solitaria on June 2, 1980. Guerrera regained the title three days later and went on to have an 808-day reign that included successful title defenses against Pantera II, Americo Rocca, his trainer Gallo Tapado, Misterioso and Octagón. In 1989 Guerrera also began working part-time in the Tijuana, Baja California based World Wrestling Association promotion, winning the WWA Welterweight Championship twice in 1989 and 1990.


Output: b


Input: Consider Input: Question: What bands did David "Hawk" Wolinski write songs for? Passage:Seraphine co-wrote several songs for the band: "Lowdown" (a Top 40 hit for the band), the instrumentals "Prelude to Aire", "Aire", and "Devil's Sweet" from the album Chicago VII, "Little One", "Take Me Back to Chicago", "Show Me the Way", "Birthday Boy" and "Street Player". His writing partner was often David "Hawk" Wolinski, the keyboardist for Rufus featuring Chaka Khan. His song "Street Player" was sampled by The Bucketheads for the dance hit "The Bomb! (These Sounds Fall into My Mind)", and later by rapper Pitbull for the hit "I Know You Want Me (Calle Ocho)" from the album "Rebelution". The song samples "75, Brazil Street" by Nicola Fasano versus Pat Rich, which itself samples "Street Player". "I Know You Want Me" has also been featured in Dance Central, the dancing game for Kinect, Dance Dance Revolution X2 for PlayStation 2, and SingStar Dance, the dancing game for PlayStation Move.


Output: b


Input: Consider Input: Question: How old was Sir Lyell when Carpenter met him? Passage:He went into medical practice at Jackson, East Feliciana Parish, Louisiana and continued to pursue an interest in the natural sciences. In 1838, he published a study of a submerged forest he discovered near Port Hudson, East Baton Rouge Parish, Louisiana. In 1842, he was a professor of "materia medica" at the University of Louisiana, where he was appointed dean in 1845. In 1844, he published a study on the habit of dirt eating among Negro slaves, and he published several other significant studies. He was a leading proponent of research into disease transportability and transmission as related to importation of disease and outbreak of epidemics. He joined the faculty of the Medical College of Louisiana as Professor of Botany and Geology, and from 1845-1846 he was Dean of the Tulane University School of Medicine. From 1846 through 1848, he was editor of the New Orleans Medical and Surgical Journal. In early 1846, he met Sir Charles Lyell, who said of him: "His knowledge of botany and geology, as well as his amiable manners, made him a most useful and agreeable companion". His botanical collections were published posthumously and several plants were named in his honor, including the rare flowering California Bush Anemone, Carpenteria californica, which was "named in honour of Professor William M. Carpenter (1811-48), a physician from Louisiana, by its discoverer, Major General John Charles Fremont, who collected it on one of his four journeys of exploration in the extreme west of the United States between 1842 and 1848." Carpenter's Groundcherry (Physalis carpenteri Riddell, 1853 ex Rydberg, 1896), a plant in the nightshade family indigenous to Louisiana, and Carpenter's Oak, Quercus carpenteri Riddell, 1853, also indigenous to Louisiana, were named in his honor by fellow naturalist John Leonard Riddell.



Output: b