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.

Input: Consider Input: Question: How many years had the American Revolution been ongoing when the British evacuated Boston? Passage:Benjamin Thompson was a Loyalist during the American Revolution, and fled the country in 1775 when the British evacuated Boston. He returned late in the Rev War commanding the King's American Dragoons, who saw action in the Southern states. He returned to England after the British surrender. He eventually settled for a time in the Holy Roman Empire, where he acquired the title of Count Rumford, and where he performed his groundbreaking research into the design of heating systems. This research resulted in a series of improvements to home heating systems, notably the Rumford stove, a shallow fireplace that more efficiently projected heat into a room than older and larger fireplaces. While in Munich, Thompson oversaw reforms of the indigent welfare system of Bavaria, and designed the city's famous English Garden. Thompson was also an inveterate and practical tinkerer, developing new versions of everyday utensils. He also proposed in 1799 the establishment in the United Kingdom of a research organization, which resulted in the founding of the Royal Institution. Although he never returned to the country of his birth, he did endow a professorial chair at Harvard College, and established the Rumford Prize, an annual award given by the American Academy of Arts and Sciences. He died in Paris in 1814.

Output: a

Input: Consider Input: Question: Which opera that Brambilla performed at Teatro Carcano was written first? Passage:After her professional debut in 1831, Brambilla initially sang in several smaller opera houses in northern Italy but in 1833 scored a considerable success at Milan's Teatro Carcano singing Agnese in Bellini's Beatrice di Tenda and the leading soprano role in Fioravanti's Le cantatrici villane. She then appeared on Russia at the Odessa Opera House, which at the time specialised in Italian opera. Upon her return to Milan in 1837, she sang with her sister Marietta at La Scala in the world premiere of In morte di Maria Malibran de Beriot, a cantata in memory of Maria Malibran composed by Gaetano Donizetti, Giovanni Pacini, Saverio Mercadante, Nicola Vaccai and Pietro Antonio Coppola. After singing in Barcelona, she returned to La Scala for the 1839/1840 season in Mercadante's Le due illustri rivali and the world premieres of Mazzucato's I corsari and Coccia's Giovanna II.

Output: a

Input: Consider Input: Question: What albums have Pearl Jam released since Backspacer? Passage:Following Abbruzzese's exit in 1994, original Red Hot Chili Peppers drummer Jack Irons joined the band. Pearl Jam subsequently released No Code in 1996 and Yield in 1998. The band once again changed drummers in 1998, with Irons being replaced by former Soundgarden drummer Matt Cameron, who had previously worked with the members of Pearl Jam in the Temple of the Dog project and had drummed on the band's first demos. Cameron has remained as Pearl Jam's drummer ever since. In 1998, Pearl Jam released "Last Kiss" on the band's fan club Christmas single; however, by popular demand, the cover was released to the public as a single in 1999. "Last Kiss" became the band's highest-charting single, peaking at number two on the Billboard Hot 100. In 2000, Pearl Jam released its sixth studio album, Binaural, and initiated a series of "official bootlegs" of live albums. The band released seventy-two such live albums in 2000 and 2001, and set a record for most albums to debut in the Billboard 200 at the same time. The band's seventh studio album, 2002's Riot Act, was their last for Epic. After a one-record deal with J Records in 2006 for the distribution of their eighth studio album, the eponymous Pearl Jam, the band started releasing through self-owned label Monkeywrench Records, starting with their ninth studio album, Backspacer, in 2009. Since its inception, Pearl Jam has sold 32 million albums in the US, including all of the band's live official bootlegs, and over 85 million copies worldwide until 2016.
Output: b