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.

Example Input: Question: How many grand slam tournaments have been won by the player Alexandrova lost to in the Rogers Cup? Passage:In 2019, Alexandrova had more success in the WTA Tour. Seeded sixth, she reached the quarterfinals of the St. Petersburg Ladies' Trophy, followed by a semifinal entry at the Hungarian Ladies Open. She entered the 3rd Round of the Premier Mandatory BNP Paribas Open in Indian Wells, after beating World No. 13 Caroline Wozniacki in three sets. She performed not satisfying on clay tournaments, except at French Open, reaching the third round of a Grand Slam tournament for the first time. In the grass court season, Alexandrova made it into the quarterfinals of the Premier Eastbourne International tournament, losing there to Karolina Pliskova. She achieved her best run in a Premier 5 tournament at the Rogers Cup, reaching the 3rd Round as qualifier. She lost to Serena Williams. After reaching the 2nd Round of the US Open and following Daria Kasatkina's 1st Round loss, Alexandrova became Russia's number one female tennis player.

Example Output: b

Example Input: Question: How old was the lead singer of the band when he was conscripted for service in the Vietnam War? Passage:Joe Camilleri was born the third of ten children in Malta in 1948. The family migrated to Australia when he was two. Camilleri grew up in Port Melbourne and listened to rock music on the radio. His mother called him Zep and he became known as Jo Zep. Camilleri began his music career in 1964 when literally thrown onstage to sing with The Drollies. He played blues and R&B in the mid-1960s with The King Bees, and was then a member of Adderley Smith Blues Band. In 1968, lead singer for the band, Broderick Smith had been conscripted for National Service during the Vietnam War. Camilleri lasted a year with Adderley Smith, and enjoyed working with the band including guitarist Kerryn Tolhurst (later in The Dingoes with Smith). According to Australian music journalist Ed Nimmervoll, Camilleri was sacked for sounding too much like Mick Jagger and upstaging other band members. After Adderley Smith, Camilleri was a member of various bands, including The Pelaco Brothers during 19741975.

Example Output: a

Example Input: Question: How many years had the Emperor Haile Selassie been in power when the Derg overthrew his rule in 1974? Passage:The Derg overthrew the Ethiopian Empire and Emperor Haile Selassie in a coup d'etat on 12 September 1974, establishing Ethiopia as a Marxist-Leninist communist state with itself as a military junta and provisional government. Various left-wing, ethnic, and anti-communist opposition groups supported by the United States began armed resistance to the Soviet-backed Derg, in addition to the Eritrean separatists already fighting in the Eritrean War of Independence. The Derg used military campaigns and the Qey Shibir (Ethiopian Red Terror) to repress the rebels. By the mid-1980s, various issues such as the 19831985 famine, economic decline and other after-effects of Derg policies ravaged Ethiopia, increasing popular support for the rebels. The Derg dissolved itself in 1987, establishing the People's Democratic Republic of Ethiopia (PDRE) under the Workers' Party of Ethiopia (WEP) in an attempt to maintain its rule. The Soviet Union ended its support for the PDRE in the late-1980s and the government was overwhelmed by the increasingly victorious rebel groups. In May 1991, the PDRE was defeated in Eritrea and President Mengistu Haile Mariam fled the country. The Ethiopian Civil War ended on 4 June 1991 when the Ethiopian People's Revolutionary Democratic Front (EPRDF), a coalition of left-wing ethnic rebel groups, entered the capital Addis Ababa and overthrew the WEP. The PDRE was dissolved and replaced with the Tigray People's Liberation Front-led Transitional Government of Ethiopia.

Example Output:
b