instruction:
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.
question:
Question: What year was the single that once held the title of best-selling digital song of all time release? Passage:Described by will.i.am as "party album[s]", The Black Eyed Peas released the electronic dance-influenced The E.N.D. and The Beginning in 2009 and 2010, following the 2008 election of Barack Obama as President of the United States. The band welcomed Obama's election; will.i.am had recorded and released "Yes We Can", a single that promoted Obama's election campaign during the Democratic Party primaries, and often claims the song had helped Obama get elected. The band's most commercially successful single during this period, "I Gotta Feeling", was inspired by the band's perception of being "in the center of a ginormous change in America". The track became the best-selling digital song of all time until it was surpassed by Pharrell Williams' "Happy" in 2014. By the end of 2010, The E.N.D. had sold over eleven million copies worldwide, while The Beginning had sold over two million copies worldwide. The band had intended to return to the studio to create their seventh studio album soon after the release of The Beginning, though frequent delays and Taboo's diagnosis with testicular cancer in 2014, along with his subsequent treatment and recovery, led to the project being put on hiatus.

answer:
b


question:
Question: How many total people have been awarded the fellowship that Heutz received in 2007? Passage:Heutz joined Imperial College London in 2007 as a Royal Society Dorothy Hodgkin Research Fellow. She was awarded the 2008 Institute of Materials, Minerals and Mining Silver Medal for her research on organic thin films. In particular she had developed new electron - donor morphologies for efficient solar cells. Heutz specialises in the use of electron paramagnetic resonance (EPR) to monitor unpaired electrons within materials. She used EPR to monitor spins within copper phthalocyanine solar cells. Whilst working on new materials for photovoltaics, Heutz showed that electrons in copper phthalocyanine (a blue pigment found in a Bank of England £5 note) exist in a superposition of two different spin states. She demonstrated that copper phthalocyanine could be used for quantum computing, where information is stored as qubits as opposed to binary bits.

answer:
b


question:
Question: Did Tan Dun write any music the year Liao made his debut at the Washington National Opera? Passage:In 2000 Liao made his debut at the Washington National Opera as the Count di Luna in Verdi's Il trovatore at the Kennedy Center with Plácido Domingo conducting. In 2001 he portrayed Enzo in Attila with the Opera Orchestra of New York (OONY) at Carnegie Hall, and was heard again with that ensemble the following year as Captain Israele in Gaetano Donizetti's Marino Faliero. In 2002 he sang the role of Méphistophélès in Berlioz's La damnation de Faust with the China Philharmonic Orchestra. In 2003 he made his debut at the Dutch National Opera as the Japanese Prince in Tan Dun's . That same year he made his debut with the Michigan Opera Theater as the Count di Luna, and was also seen with that company as Renato in Un ballo in maschera. In 2004 he sang the role of Pasha Seid in Verdi's Il corsaro with the OONY under Eve Queler at Carnegie Hall.

answer:

b


