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.

Q: Sentence: Beyoncé has received numerous awards. As a solo artist she has sold over 15 million albums in the US, and over 118 million records worldwide (a further 60 million additionally with Destiny's Child), making her one of the best-selling music artists of all time. The Recording Industry Association of America (RIAA) listed Beyoncé as the top certified artist of the 2000s, with a total of 64 certifications. Her songs "Crazy in Love", "Single Ladies (Put a Ring on It)", "Halo", and "Irreplaceable" are some of the best-selling singles of all time worldwide. In 2009, The Observer named her the Artist of the Decade and Billboard named her the Top Female Artist and Top Radio Songs Artist of the Decade. In 2010, Billboard named her in their "Top 50 R&B/Hip-Hop Artists of the Past 25 Years" list at number 15. In 2012 VH1 ranked her third on their list of the "100 Greatest Women in Music". Beyoncé was the first female artist to be honored with the International Artist Award at the American Music Awards. She has also received the Legend Award at the 2008 World Music Awards and the Billboard Millennium Award at the 2011 Billboard Music Awards. 
Question: How many copies of her albums as Beyonce sold in the US?

A: 15 million
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Q: Sentence: The Convention came into force as international law on 12 January 1951 after the minimum 20 countries became parties. At that time however, only two of the five permanent members of the UN Security Council were parties to the treaty: France and the Republic of China. The Soviet Union ratified in 1954, the United Kingdom in 1970, the People's Republic of China in 1983 (having replaced the Taiwan-based Republic of China on the UNSC in 1971), and the United States in 1988. This long delay in support for the Convention by the world's most powerful nations caused the Convention to languish for over four decades. Only in the 1990s did the international law on the crime of genocide begin to be enforced. 
Question: The delay in support by certain powerful members meant the Convention was largely powerless for over how many decades?

A: four
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Q: Sentence: The library system also includes branch libraries for Architecture, Chemistry & Physics, Engineering, Law, and Mathematics as well as information centers in the Mendoza College of Business, the Kellogg Institute for International Studies, the Joan B. Kroc Institute for International Peace Studies, and a slide library in O'Shaughnessy Hall. A theology library was also opened in fall of 2015. Located on the first floor of Stanford Hall, it is the first branch of the library system to be housed in a dorm room. The library system holds over three million volumes, was the single largest university library in the world upon its completion, and remains one of the 100 largest libraries in the country. 
Question: How many books are held by the Notre Dame libraries?

A:
over three million volumes
****
