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: Who is the oldest main member of the cast to appear in Black Broad way in May of 1980? Passage:In April 1980, Hall returned to the US and from 1 to 24 May she appeared in the cast of Black Broadway (a retrospective musical revue) at the Town Hall in New York. Among other artists appearingd in the show were Elisabeth Welch, Gregory Hines, Bobby Short, Honi Coles, Edith Wilson, Nell Carter and John W. Bubbles of Buck and Bubbles fame. The show had originally been staged at the Newport Jazz Festival on 24 June 1979, before it was re-assembled in 1980 and staged at the Town Hall. Following Black Broadway, in June 1980, Hall took up temporary residence at Michael's Pub in New York and commenced a three-week engagement, performing three shows a night. Also in June 1980, she performed at the Playboy Jazz Festival held at the Hollywood Bowl in Los Angeles. Other artists on the bill included Dizzy Gillespie, Herbie Hancock, Stéphane Grappelli, Mel Tormé, Zoot Sims, Carmen McRae and Chick Corea. On 2 July 1980, writer Rosetta Reitz organised a tribute to the Women of Jazz at Avery Fisher Hall as part of the Newport Jazz Festival. Called The Blues is a Woman, the program, narrated by Carmen McRae, featured music by Adelaide Hall, Big Mama Thornton, Nell Carter and Koko Taylor. Back in the States, in February 1983, Hall appeared on the bill of the 100th birthday celebration for composer Eubie Blake held at the Shubert Theater, New York. Unfortunately, Blake was recovering from pneumonia at the time so could not attend the event but with the aid of a special telephone hook-up to his home in Brooklyn he was able to listen to the entire two-hour show. On 5 April 1983, Hall commenced a month-long engagement at the Cookery in New York. Her accompanists were Ronnie Whyte and Frank Tate.


b