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.

Example Input: Question: What other commercials did Rupert Sanders direct the year he directed The Life? Passage:The Life, also known as We Are ODST is a television and cinema advertisement launched in 2009 by Microsoft to promote the first person shooter  in the United States. The 150-second piece follows a young soldier through enlistment, training, and battle as an Orbital Drop Shock Trooper (ODST), analogous to a paratrooper that drops from space to a battlefield. The Life was created by advertising agency T.A.G., an offshoot of McCann Erickson. Production of the commercial itself was handled by production company Morton/Jankel/Zander (MJZ). It was directed by Rupert Sanders, and post-production was conducted by Asylum. It was filmed in Hungary, just outside Budapest in a coal mine and abandoned factories to give the sequence an "Eastern Bloc" aesthetic. The commercial and its associated campaign proved hugely successful; on the week of its launch, Halo 3: ODST became the top-selling game for the Xbox 360 worldwide, and over 2.5 million copies were sold within the first few weeks of release. The Life went on to win a number of honours from the advertising and entertainment industries, including two Clio Awards, a London International Advertising Award and several honours from the Cannes Lions International Advertising Festival, the most prestigious awards ceremony in the advertising industry.

Example Output: a

Example Input: Question: What is the maximum length of the species that is known to prey on the crossback stingaree? Passage:The broadnose sevengill shark (Notorynchus cepedianus) is known to prey on the crossback stingaree. When threatened, this ray raises its tail warningly above its body in a scorpion-like fashion. Parasites documented from this species include a tapeworm in the genus Acanthobothrium, and the monogenean Calicotyle urolophi. Like other stingrays, the crossback stingaree is aplacental viviparous: when the developing embryos exhaust their supply of yolk, their mother provisions them with nutrient-rich histotroph ("uterine milk") through specialized extensions of the uterine epithelium called "trophonemata". Females produce litters of 1–4 pups every other year. Embryonic development proceeds rapidly over a six-month period, though the total gestation period may be much longer if there is a period of dormancy for the eggs after fertilization, as has been reported in other stingarees. Off Tasmania, large estuaries such as at the mouth of the River Derwent serve as nursery areas.

Example Output: b

Example Input: Question: How long had the Royal Opera Covent Garden been in operation when Sarah Fox made her debut as Woglinde? Passage:In 2000, Fox made her debut for the Glyndebourne Festival as Karolka (Jenufa), returning in 2002 as Zerlina (Don Giovanni) and in 2003 as Susanna (Le nozze di Figaro). Of her Susanna in Le Nozze di Figaro at the Glyndebourne Festival Barbarina Diana, writing in Il giornale della musica described her performance at Glyndebourne as "a delight for the eye and heart, whose voice, fresh and crystal clear is blessed with a rare beauty accompanied by a strong musicality: 'Deh vieni' interpreted without affectation, directed to her beloved, takes your breath away". With Glyndebourne on tour she has sung Marzelline (Fidelio) and Miss Wordsworth (Albert Herring). In 2004, she made her debut with the Royal Opera Covent Garden as Woglinde (Das Rheingold), returning to the house in 2005 as Waldvogel (Siegfried) and in 2006 as Woglinde (Götterdämmerung). In 2007 she sang Zerlina (Don Giovanni) and Woglinde (Das Rheingold and Götterdämmerung; in 2008, Lucy Lockitt in The Beggars Opera and in 2009, Asteria in Handel's "Tamerlano." Further British engagements include Ann Page (Sir John in Love) with English National Opera, Merab (Saul), Musetta and Mimi (La Bohème) with Opera North, and Servilia (La clemenza di Tito) with Welsh National Opera. At the Edinburgh Festival, her roles have included Iphis (Jephtha) and Cleofide (Poro).

Example Output:
b