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: Who is the owner of the last CFL team that Walker played for? Passage:Chevon Walker (born May 9, 1987 in Montego Bay, Jamaica) is a former professional Canadian football running back and kick returner for the Winnipeg Blue Bombers of the Canadian Football League. He played NCAA football for the Sioux Falls Cougars. He played two years of his career as a professional football player in the Canadian Football League for the Hamilton Tiger-Cats. In 2014, the Ottawa Redblacks selected him in the expansion draft. He started the 2015 season with the Ottawa Redblacks before he was released on August 28, 2015. On September 1, 2015, it was announced that Walker had signed with the Winnipeg Blue Bombers. Chevon Walker has over 1000 rushing yards and seven touchdowns in three years of professional play.

Ex Output:
b

Ex Input:
Question: How long before "Promise This" was released was the city it was recorded in established? Passage:"Promise This" is an up-tempo dance-pop song written by American songwriter Priscilla Hamilton, British music producer Wayne Wilkins, who was responsible for Cole's debut single "Fight for This Love", and Christopher Jackson. It is written in the music key of C minor with a time signature in common time and a tempo of 151beats per minute. Cole's vocal range spans from G to E. The basic chord progression of the song is Cm, Cm, Cm, Cm, E, B, F, Cm, E, B and F. The song sees Cole singing some of the lyrics in French, referencing the children's song "Alouette". It was recorded in Santa Monica, California, and "finds her contemplating mortality with a cheerful morbidity, asking for prayers over a brutal march beat." Tabloids suggested that the lyrics were based upon her divorce from footballer Ashley Cole, and how her dancer friend Derek Hough nursed her to health while she was suffering from malaria. The Daily Star had also noted Cole's apparent affection in the song by her use of the French word alouette, meaning "skylark".

Ex Output:
b

Ex Input:
Question: What teams won silver and gold in the World League 2011? Passage:In 2011 he was a coach assistant of Poland men's national volleyball team, when a head coach was Andrea Anastasi. In 2011 he won with this national team three medals. On July 10, 2011 achieved bronze of World League 2011. On September 18, 2011 Poland led by Anastasi and Gardini won bronze of European Championship 2011. In the same year, in December his team achieved silver at World Cup 2011 and was qualified for the Olympic Games 2012. For the first time in the history Polish national team won three medals in one year. On July 8, 2012 his team won the final match of World League 2012 against United States (3-0). In 2012 Polish team led by them took the 5th place at the Olympic Games London 2012. In October 2013 Anastasi and Gardini were dismissed as coaches of the Polish national team. On December 22, 2014 he was appointed a new head coach of Polish club Indykpol AZS Olsztyn. In May 2015 he signed a new contract with club from Olsztyn.

Ex Output:
b