Given a question and a context passage, generate the answer having the word or phrase from the context passage. Here, the answer should be a shortest continous span from the passage.

[EX Q]: Context: 4-Day Classic Beijing Tour The 4-day classic Beijing tour is designed for tourists who come to visit China for the first time. It covers the most popular and typical places in Beijing, fully displaying the scenery, culture, history, local lifestyles and features, food and drinks, business, etc. for you. Day 1:Arrival in Beijing Your guide meets you at Capital Airport, and helps you check in at your hotel. Enjoy Beijing Duck as welcome dinner. Accommodation: Beijing downtown Day 2:The Great Wall & the Summer Palace Start your day at the most famous part of the Great Wall, the Badaling Great Wall. Leave the downtown for the Great Wall at 8 am. Since it is a long drive to the Great Wall (about 2 hours' riding) have a break at the Jade Museum on the way. Lunch will be enjoyed in a local restaurant. In the early afternoon come back to the city and have a sightseeing tour of the Summer Palace. Recommended Activity: Beijing Opera Show (Liyuan Theatre, 19:30-21: 10 every evening) Accommodation: Beijing downtown Day 3:Beijing city sightseeing & Local experience Your guide meets you at the hotel at 8 am and set out for the day's touring: Tian'anmen Square and the Forbidden City. After visiting the two sites, have a break and get ready for lunch. Hutong visit: see some traditional arts of the old Beijing, such as paper cutting and kite making, and visit a local family. Accommodation: Beijing downtown Day 4:Beijing Olympic sites Visit the Olympic sites: Bird's Nest, Water Cube and Olympic Park, witnessing the fast developing modern China. Enjoy some free time after visiting the sites. After lunch, it is shopping time and then the tour is over. 
 Question: What does this tour company think can show Beijing is a fast developing modern city?
[EX A]: bird's nest, water cube and olympic park.

[EX Q]: Context: Amazonis Planitia is one of the smoothest plains on Mars. 
 Question: On what celestial body is Amazonis Planitia located?
[EX A]: mars

[EX Q]: Context: The proposition that finger print variability between individuals might be reduced by the absence of an X-chromosome in Turner's syndrome was rejected. In the present study of 58 XO patients, aged 15-50 years, relatives of several cases, unrelated female control samples and three unrelated male samples were investigated. The higher mean value of the TRC among patients supported the hypothesis forwarded by Penrose that an added X- or Y-chromosome reduces the TRC and a missing one increasing it. The figures do not speak against the hypothesis that genes affecting the TRC are located on the X-chromosome. A summary of the major dermatoglyphic investigations in Turner's syndrome is presented. 
 Question: What chromosome is affected in Turner's syndrome?
[EX A]:
x