In this task, you're given passages that contain mentions of the quantity of a particular object and are supposed to find out the answer for a given question. Craft one correct answer to the question given in input. Make sure your correct answer is consistent with the context, and properly gives the exact number relating to the query.
 In your answer, use as few words as possible from the given context. To be less repetitive, please vary your language for each question.

Sentence: In September 2015 it was announced that Sam Smith and regular collaborator Jimmy Napes had written the film's title theme, "Writing's on the Wall", with Smith performing it for the film. Smith said the song came together in one session and that he and Napes wrote it in under half an hour before recording a demo. Satisfied with the quality, the demo was used in the final release. 
Question: How many recording sessions did it take to complete the song?
one

Sentence: Beyoncé's second solo album B'Day was released on September 5, 2006, in the US, to coincide with her twenty-fifth birthday. It sold 541,000 copies in its first week and debuted atop the Billboard 200, becoming Beyoncé's second consecutive number-one album in the United States. The album's lead single "Déjà Vu", featuring Jay Z, reached the top five on the Billboard Hot 100 chart. The second international single "Irreplaceable" was a commercial success worldwide, reaching number one in Australia, Hungary, Ireland, New Zealand and the United States. B'Day also produced three other singles; "Ring the Alarm", "Get Me Bodied", and "Green Light" (released in the United Kingdom only). 
Question: How many copies did B'Day sell during the first week of its release?
541,000

Sentence: Back in Warsaw that year, Chopin heard Niccolò Paganini play the violin, and composed a set of variations, Souvenir de Paganini. It may have been this experience which encouraged him to commence writing his first Études, (1829–32), exploring the capacities of his own instrument. On 11 August, three weeks after completing his studies at the Warsaw Conservatory, he made his debut in Vienna. He gave two piano concerts and received many favourable reviews—in addition to some commenting (in Chopin's own words) that he was "too delicate for those accustomed to the piano-bashing of local artists". In one of these concerts, he premiered his Variations on Là ci darem la mano, Op. 2 (variations on an aria from Mozart's opera Don Giovanni) for piano and orchestra. He returned to Warsaw in September 1829, where he premiered his Piano Concerto No. 2 in F minor, Op. 21 on 17 March 1830. 
Question: How many public performances did Chopin do where he made his debut after completing his education?

two