In this task, you're expected to write answers to questions involving multiple references to the same entity. The answer to the question should be unambiguous and a phrase in the paragraph. Most questions can have only one correct answer.

Q: Passage: A number of performers and groups, including several early leaders, have been recognized for their contributions to taiko performance. Daihachi Oguchi was best known for developing kumi-daiko performance. Oguchi founded the first kumi-daiko group called Osuwa Daiko in 1951, and facilitated the popularization of taiko performance groups in Japan.Seidō Kobayashi is the leader of the Tokyo-based taiko group Oedo Sukeroku Taiko as of December 2014. Kobayashi founded the group in 1959 and was the first group to tour professionally. Kobayashi is considered a master performer of taiko. He is also known for asserting intellectual control of the group's performance style, which has influenced performance for many groups, particularly in North America.In 1968, Seiichi Tanaka founded the San Francisco Taiko Dojo and is regarded as the Grandfather of Taiko and primary developer of taiko performance in the United States. He was a recipient of a 2001 National Heritage Fellowship awarded by the National Endowment for the Arts  and since 2013 is the only taiko professional presented with the Order of the Rising Sun 5th Order: Gold and Silver Rays by Emperor Akihito of Japan, in recognition of Grandmaster Seiichi Tanaka's contributions to the fostering of US-Japan relations as well as the promotion of Japanese cultural understanding in the United States.In 1969, Den Tagayasu (田耕, Den Tagayasu) founded Ondekoza, a group well known for making taiko performance internationally visible and for its artistic contributions to the tradition. Den was also known for developing a communal living and training facility for Ondekoza on Sado Island in Japan, which had a reputation for its intensity and broad education programs in folklore and music.Performers and groups beyond the early practitioners have also been noted. Eitetsu Hayashi is best known for his solo performance work. Hayashi joined Ondekoza when he was 19, and after parting from the group helped found Kodo, one of the best known and most influential taiko performance groups in the world. Hayashi soon left the group to begin a solo career and has performed in venues such as Carnegie Hall in 1984, the first featured taiko performer there. He was awarded the 47th Education Minister's Art Encouragement Prize, a national award, in 1997 as well as the 8th Award for the Promotion of Traditional Japanese Culture from the Japan Arts Foundation in 2001. 
Question: What group is known for its artistic contributions to the tradition?

A: Ondekoza.
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Q: Passage: In 1891 the Great Northern Railway crossed the Continental Divide at Marias Pass 5,213 feet (1,589 m), which is along the southern boundary of the park. In an effort to stimulate use of the railroad, the Great Northern soon advertised the splendors of the region to the public. The company lobbied the United States Congress. In 1897 the park was designated as a forest preserve. Under the forest designation, mining was still allowed but was not commercially successful. Meanwhile, proponents of protecting the region kept up their efforts. In 1910, under the influence of the Boone and Crockett Club, spearheaded by Club members George Bird Grinnell, Henry L. Stimson, and the railroad, a bill was introduced into the U.S. Congress which redesignated the region from a forest reserve to a national park. This bill was signed into law by President William Howard Taft on May 11, 1910. In 1910 George Bird Grinnell wrote, "This Park, the country owes to the Boone and Crockett Club, whose members discovered the region, suggested it being set aside, caused the bill to be introduced into congress and awakened interest in it all over the country".
From May until August 1910, the forest reserve supervisor, Fremont Nathan Haines, managed the park's resources as the first acting superintendent. In August 1910, William Logan was appointed the park's first superintendent. While the designation of the forest reserve confirmed the traditional usage rights of the Blackfeet, the enabling legislation of the national park does not mention the guarantees to the Native Americans. It is the position of the United States government that with the special designation as a National Park the mountains ceded their multi-purpose public land status and the former rights ceased to exist as it was confirmed by the Court of Claims in 1935. Some Blackfeet held that their traditional usage rights still exist de jure. In the 1890s, armed standoffs were avoided narrowly several times.The Great Northern Railway, under the supervision of president Louis W. Hill, built a number of hotels and chalets throughout the park in the 1910s to promote tourism.  These buildings, constructed and operated by a Great Northern subsidiary called the Glacier Park Company, were modeled on Swiss architecture as part of Hill's plan to portray Glacier as "America's Switzerland". Hill was especially interested in sponsoring artists to come to the park, building tourist lodges that displayed their work.  His hotels in the park never made a profit but they attracted thousands of visitors who came via the Great Northern. Vacationers commonly took pack trips on horseback between the lodges or utilized the seasonal stagecoach routes to gain access to the Many Glacier area in the northeast. 
Question: What was the full name of the Great Northern Railway president?

A: Louis W. Hill.
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Q: Passage: "What You Waiting For?" was released as the lead single from Love. Angel. Music. Baby. on September 28, 2004. The single peaked at number 47 on the Billboard Hot 100, and was commercially successful overseas, topping the chart in Australia and reaching the top 10 in several countries including France, Netherlands, New Zealand, Sweden, and the United Kingdom. "Rich Girl", featuring Eve, was released as the album's second single on December 14, 2004, becoming Stefani's first top-10 entry as a solo artist in the US when it peaked at number seven on the Billboard Hot 100. Elsewhere, the song performed equally as successfully as "What You Waiting For?". "Hollaback Girl" was released as the third single on March 15, 2005. It became the album's best-selling and most popular single, while also becoming the first single to sell one million digital copies in the US. The song topped the Billboard Hot 100 within six weeks of its release, earning Stefani her first number-one single on the chart."Cool" was released as the fourth single from the album on July 5, 2005. The song fared moderately on the charts, reaching the top 10 in Australia and New Zealand, as well as the top 20 in Denmark, Germany, Ireland, Norway, the UK and the US. "Luxurious" was released as the fifth single in October 2005. The single version features rapper Slim Thug. The song was less successful than the previous singles from the album, peaking at number 21 on the Billboard Hot 100. "Crash" was not originally planned as a single, but due to Stefani's pregnancy, her second solo album was delayed, and the song was released as the sixth and final single from the album on January 24, 2006. 
Question: What is the title of the song that peaked at number 21 on the Billboard Hot 100?

A:
Luxurious.
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