Question: What is the third busiest airport in the country where Shi Na was born?

full_context: Document 1: Sin Na-hee: Sin Na-hee (born September 24, 1990 in Daegu) is a South Korean figure skater. She represented her country at the 2008 World Junior Championships and finished 17th. She won the bronze medal at the 2008 Asian Figure Skating Trophy.
Document 2: Winnipeg James Armstrong Richardson International Airport: Winnipeg James Armstrong Richardson International Airport (commonly known as Winnipeg International Airport or simply Winnipeg Airport) is an international airport located in Winnipeg, Manitoba, Canada. It is the seventh busiest airport in Canada by passenger traffic, serving 4,305,744 passengers in 2017, and the 11th busiest airport by aircraft movements. It is a hub for passenger airlines Calm Air, Perimeter Airlines, Flair Airlines, and cargo airline Cargojet. It is also a focus city for WestJet. The airport is co-located with Canadian Forces Base Winnipeg.
Document 3: Shi Na: Shi Na (born February 17, 1981 in Xintai, Shandong) is a Chinese athletics race walker. She represented her country at the 20 km race walk event at the 2008 Summer Olympics.
Document 4: New Delhi: Indira Gandhi International Airport, situated to the southwest of Delhi, is the main gateway for the city's domestic and international civilian air traffic. In 2012-13, the airport was used by more than 35 million passengers, making it one of the busiest airports in South Asia. Terminal 3, which cost ₹96.8 billion (US$1.4 billion) to construct between 2007 and 2010, handles an additional 37 million passengers annually.
Document 5: Lin Sang: Lin represented China at the 2004 Summer Olympics. She placed 11th in the women's individual ranking round with a 72-arrow score of 647. In the first round of elimination, she faced 54th-ranked Tshering Chhoden of Bhutan. In a major upset, Lin lost 159-156 in the 18-arrow match, placing only 36th overall in women's individual archery.
Document 6: 2017 South Asian floods: Monsoon rains caused urban flooding in Karachi and Rawalpindi, the largest city in Pakistan. At least 23 people, including seven children, died after Karachi received up to 130 millimetres (5.1 in) of rainfall on 31 August. Most of the victims died from being electrocuted, with others being killed by partial building collapses or drowning. Two more died in Kashmore and Jamshoro districts of Sindh.The flooding followed a little more than a week after 41 millimetres (1.6 in) of rain fell on Karachi on 21–22 August. There, 19 people died in rain-related incidents—including electrocution, falling billboards, and roof collapse, according to the Edhi and Chhipa rescue services.
Document 7: Seoul: Incheon International Airport, opened in March 2001 in Yeongjong island, is now responsible for major international flights. Incheon International Airport is Asia's eighth busiest airport in terms of passengers, the world's fourth busiest airport by cargo traffic, and the world's eighth busiest airport in terms of international passengers in 2014. In 2016, 57,765,397 passengers used the airport.
Document 8: 2008 Sichuan earthquake: The most precarious of these quake-lakes was the one located in the extremely difficult terrain at Mount Tangjia in Beichuan County, Sichuan, accessible only by foot or air; an Mi-26T heavy lift helicopter belonging to the China Flying Dragon Special Aviation Company was used to bring heavy earthmoving tractors to the affected location. This operation was coupled with the work done by PLAAF Mi-17 helicopters bringing in PLA engineering corps, explosive specialists and other personnel to join 1,200 soldiers who arrived on site by foot. Five tons of fuel to operate the machinery was airlifted to the site, where a sluice was constructed to allow the safe discharge of the bottlenecked water. Downstream, more than 200,000 people were evacuated from Mianyang by June 1 in anticipation of the dam bursting.
Document 9: Wang Jing (athlete): Wang represented China at the 2008 Summer Olympics in Beijing competing at the 100 metres sprint. In her first round heat she placed fifth in a time of 11.87 which was not enough to advance to the second round. Together with Tao Yujia, Jiang Lan and Qin Wangping she also took part in the 4x100 metres relay. In their first round heat they placed fourth behind Jamaica, Russia and Germany. Their time of 43.78 seconds was the tenth time overall out of sixteen participating nations. With this result they failed to qualify for the final.
Document 10: 2007 Shandong coal mine flood: The 2007 Shandong coal mine flood was an incident that occurred on August 17, 2007 in Xintai, Shandong, People's Republic of China, when heavy rain caused a river to burst a levee creating a flood into two mine shafts. By 8:50 am (1:50GMT), the mine was inundated underwater.
Document 11: List of busiest airports in the United Kingdom: The United Kingdom, an island country, is home to many of Europe's largest and busiest airports. London - Heathrow, which handles over 75 million international passengers annually, is the largest airport in the UK. London serves as the largest aviation hub in the world by passenger traffic, with six international airports, handling over 163 million passengers in 2016, more than any other city. London's second - busiest airport, London - Gatwick, was until 2016 the world's busiest single - runway airport. Manchester Airport is the United Kingdom's third - busiest airport. London - Stansted and London - Luton are the fourth - and fifth - busiest airports, respectively.
Document 12: Somalia at the 2008 Summer Olympics: Somalia sent a delegation to compete at the 2008 Summer Olympics in Beijing, China. The country's participation at Beijing marked its seventh in the Summer Olympics since its debut in 1972 Games. The delegation included two track and field athletes: sprinter Samiya Yuusf Omar and long-distance runner Abdinasir Said Ibrahim. Neither athlete progressed past the first round of their respective competitions. Omar's story, having trained in Mogadishu during the Somali Civil War, was covered by the media at the time, and later featured in a graphic novel following her death.
Document 13: 2009 Chongqing mine blast: The 2009 Chongqing mine blast was a gas explosion that occurred at a coal mine in southwestern China in Qijiang County, Chongqing, China.
Document 14: Guangzhou Baiyun International Airport: In 2017, Guangzhou Baiyun International Airport was China's third-busiest and world's 13th-busiest airport by passenger traffic, with 65,806,977 passengers handled. As for cargo traffic, the airport was China's third-busiest and the 19th-busiest worldwide. Baiyun airport was also the third-busiest airport in China in terms of aircraft movements.
Document 15: 2017 Sierra Leone mudslides: Early in the morning on August 14, 2017, after three days of torrential rainfall, devastating floods and mudslides occurred in and around Sierra Leone's capital city, Freetown.
ground_truth: Guangzhou Baiyun International Airport
sub_queries: Shi Na >> place of birth Answer: Xintai
Xintai >> country Answer: China
What is China 's third busiest airport? Answer: Guangzhou Baiyun International Airport