<s>[INST] context: The China National Opera (CNO) will give a concert to celebrate its 50thbirthday.
Different generations of CNO vocalists , like Li Guangxi, Yao Hong and Ma Mei, will present the concert which will feature both songs from famous operas like "The White-haired Girl" and "The Hundredth Bride", as well as arias  of such Western opera classics as "Madame Butterfly", "La Traviata" and "Rigoletto".
Time/Date:7:30pm, September 7,8
Location: Tianqiao Theatre
Tel: 65514787, 83156170
Tickets:60~500 yuan (US $7.3~60.2)
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A concert will be held to feature some recently-composed traditional Chinese music works.
The concert, given by the Folk Orchestra of China Opera and Ballet Theatre, will include such pieces as "Memory of Childhood", "Memorial Ceremony for God" and "Wine Song".
Time/Date:7:30pm, September 13
Location: Concert Hall at the National Library of China
Tel: 68485462, 68419220
Tickets:30~200 yuan (US $ 3.6~24.1)
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A concert of traditional Chinese music will be given on the eve of the Moon Festival which falls on September 21 this year.
The concert will feature a number of famous pieces centered on the theme of the moon, such as "Moonlight", "Spring Night on a Moonlit River" and "Lofty Mountain and Flowing River".
A number of established traditional Chinese music performers, like Zhou Yaokun and Fan Weiqing, will play solos as well as collaborate  with the folk music orchestra.
Time/Date:7:30pm, September 20
Location: Grand Theatre of the Cultural Palace of Nationalities
Tel : 66068888, 66069999 [/INST] question: If you want to buy tickets for listening to the music "Memory of Childhood", you will dial  _  . | options: A: 65514787 B: 83156170 C: 68485462 D: 66069999 | answer: B </s>