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.

Ex Input:
Question: Where was Schunk's conductor for his 1986 tenor solo performance born? Passage:From 1979 onwards, he worked as a freelance singer, performing internationally. He appeared at both the Hamburg State Opera and the Vienna State Opera in 1981 as the Emperor in Die Frau ohne Schatten by Richard Strauss. In 1983, he appeared as Max in Weber's Der Freischutz at the Bregenz Festival. The same year, he made his U.S. debut as Erik at the Lyric Opera of Chicago. In 1984 he took part in the Hamburg State Opera's tour of Japan. In 1986 he appeared as Florestan in Beethoven's Fidelio at the Metropolitan Opera, opposite Hildegard Behrens in the title role, returning in 1989 as Siegmund and in 1990 as the Emperor, a role which he had also performed for his 1987 debut at the Royal Opera House. In 1996, he appeared as Loge in Wagner's Das Rheingold at the Opera de Marseille. In addition to his opera activities, Schunk has also performed successfully in concerts. He recorded the tenor solo in Beethoven's Ninth Symphony in 1986, conducted by Georg Solti with the Chicago Symphony Orchestra & Chorus, alongside Jessye Norman, Reinhild Runkel and Hans Sotin.

Ex Output:
b

Ex Input:
Question: How many teams were a part of the league that ran from 2001-2003 and featured many World Cup stars? Passage:The first women's professional soccer league in the U.S. formed after the success of the 1999 Women's World Cup. The Women's United Soccer Association (WUSA) ran from 20012003 and featured many of the World Cup stars, including Mia Hamm, Michelle Akers and Brandi Chastain. Its successor Women's Professional Soccer (WPS) ran from 20092012. Currently, the National Women's Soccer League (NWSL) is the top professional league in the country and was formed in 2012. The NWSL season runs from spring to early fall (typically April October). In 2017, A&E Networks bought an equity stake in the league and broadcasts a game of the week on Lifetime, and formerly streamed all games online via the go90 platform. During the 2018 season, the NWSL moved some of the games originally scheduled to air on Lifetime to evening slots on ESPNews (both channels being part of the Disney family), and when go90 owner Verizon shut down that platform at the end of July, the NWSL streamed the games that were intended for go90 on its own website.

Ex Output:
b

Ex Input:
Question: In which country was Robert Fraser's brother an Emeritus Professor of Opera? Passage:Fraser was born on 10 May 1947 in Surbiton, Surrey, the second son of Harry MacKenzie Fraser, a London solicitor, and Ada Alice Gittins of Pontypool in the county of Monmouthshire. His brother was Malcolm Fraser (19392012), Emeritus Professor of Opera at the University of Cincinnati and co-founder of the Buxton Festival. At the age of eight, Robert Fraser won a choral scholarship to Winchester Cathedral, where he sang the daily services while studying at the Pilgrims School in the Close. Among his fellow choristers were the future newscaster Jon Snow and international tenor Julian Pike. After attending Kingston Grammar School Fraser went on to the University of Sussex to read English with David Daiches and Anthony Nuttall. He later wrote a doctorate on tradition in English poetry at Royal Holloway, University of London where the college's famous gallery of Victorian paintings was to inspire his illustrated volume of poetry The Founders' Gift: Impressions from a Collection (2017). Simultaneously with his doctorate he studied Harmony, Counterpoint and Composition at Morley College with Melanie Daiken and James Iliff.

Ex Output:
b