In this task, you're given a question, along with a context passage which has extra information available on certain terms mentioned in it, i.e., the proper nouns in the passage. Your job is to determine whether information from more than one term is needed to answer the question. Indicate your choice as `a` for Yes or `b` for No.

Ex Input:
Question: Of the 8 fraternities at the University of Alabama in the 1800s, which was the oldest on a national level? Passage:Greek letter organizations (GLOs) first appeared at the university in 1847 when two men visiting from Yale University installed a chapter of Delta Kappa Epsilon. When DKE members began holding secret meetings in the old state capitol building that year, the administration strongly voiced its disapproval. Over a few more decades, 7 other fraternities appeared at UA: Alpha Delta Phi in 1850, Phi Gamma Delta in 1855, Sigma Alpha Epsilon in 1856 (this was the founding chapter), Kappa Sigma in 1867, Sigma Nu in 1874, Sigma Chi in 1876, and Phi Delta Theta in 1877. Anti-fraternity laws were imposed that year, but were lifted in the 1890s. Women at the university founded the Zeta chapter of Kappa Delta sorority in 1903. Alpha Delta Pi soon followed.


Ex Output:
a


Ex Input:
Question: Did Brett or Mayberry start playing professional baseball first? Passage:At Kauffman Stadium, Dennis Leonard pitched a four-hit complete game to give the Royals a 2–1 series lead. After a one-out walk and single, Freddie Patek's RBI single off of Mike Torrez in the second put the Royas up 1–0. Next inning, Al Cowens's groundout with runners on second and third and no outs made it 2–0 Royals. The Yankees got on the board in the fifth when Graig Nettles singled with two outs and scored on Lou Pinella's double, but the Royals got that run back in the bottom of the inning when Hal McRae hit a leadoff double, moved to third on a groundout, and scored on Cowens's groundout. Next inning, Torrez allowed a leadoff walk and single, then got two outs before being relieved by Sparky Lyle, who allowed a two-run double to Amos Otis. Next inning, George Brett hit a leadoff single and scored on John Mayberry's RBI double. The Yankees got a run in the ninth when Roy White doubled with one out and scored on first baseman Mayberry's error on Reggie Jackson's ground ball before Chris Chambliss grounded out to end the game.


Ex Output:
a


Ex Input:
Question: Who won the men's singles championship at the event where Kontinen reached the quarterfinals of the men's doubles tournament? Passage:His good results continued in 2016 as he won the title at the Brisbane International in January with John Peers. On April–May they won the BMW Open together. At the 2016 Wimbledon Championships he reached quarterfinals of the men's doubles tournament together with Peers and the final of the mixed doubles with Heather Watson, which they won in straight sets. On July Kontinen and Peers won the German Open Tennis Championships. On August Kontinen won the Winstom-Salem Open playing with Guillermo García-López. It was Kontinen's 10th doubles title in his career. He took the victory of St. Petersburg Open with Dominic Inglot. Kontinen and Peers had a successful end for the year as they won their first Masters title at Paris Masters and the season ending ATP World Tour Finals title. Kontinen reached the top 10 in rankings as a first Finnish tennis player ever.


Ex Output:

b