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.

Ex Input:
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?

Ex Output:
Ondekoza.


Ex Input:
Passage: The band released Lost Dogs, a two-disc collection of rarities and B-sides, and Live at the Garden, a DVD featuring the band's July 8, 2003 concert at Madison Square Garden through Epic Records in November 2003. In 2004, Pearl Jam released the live album, Live at Benaroya Hall, through a one-album deal with BMG. 2004 marked the first time that Pearl Jam licensed a song for usage in a television show; a snippet of the song "Yellow Ledbetter" was used in the final episode of the television series Friends. Later that year, Epic released rearviewmirror (Greatest Hits 1991–2003), a Pearl Jam greatest hits collection spanning 1991 to 2003. This release marked the end of Pearl Jam's contractual agreement with Epic Records.Pearl Jam played a show at Easy Street Records in Seattle in April 2005; recordings from the show were compiled for the Live at Easy Street album and released exclusively to independent record stores in June 2006. The band embarked on a Canadian cross-country tour in September 2005, kicking off the tour with a fundraising concert in Missoula, Montana for Democratic politician Jon Tester, then playing the Gorge Amphitheater before crossing into Canada. After touring Canada, Pearl Jam proceeded to open a Rolling Stones concert in Pittsburgh, then played two shows at the Borgata casino in Atlantic City, New Jersey, before closing the tour with a concert in Philadelphia, Pennsylvania. The official bootlegs for the band's 2005 shows were distributed via Pearl Jam's official website in MP3 form. Pearl Jam also played a benefit concert to raise money for Hurricane Katrina relief on October 5, 2005, at the House of Blues in Chicago, Illinois. On November 22, 2005, Pearl Jam began its first Latin American tour. 
Question: In what year was rearviewmirror released?

Ex Output:
2004.


Ex Input:
Passage: In 1915 Berlin, the German high command is worried about ally Turkey. Recent British attacks on the vital Dardanelles shows signs of inside knowledge. Von Sturm, the head of German intelligence, is ordered to find out if Ali Bey, the Turkish commander of the region, is the traitor.
As his best agent has not been heard from in several weeks, von Sturm assigns Kruger the task. Shortly afterwards, Annemarie, known by the code name "Fräulein Doktor", returns after completing her mission. She also informs von Sturm that fellow spy Mata Hari has fallen in love and therefore can no longer be trusted. She recommends that an incriminating message be sent using a code that she knows has been broken by the Allies. In addition, she uncovers Kruger as a British double agent known as K-6.
When Kruger is arrested at his dentist contact's office, another patient, American medical student Douglas Beall, is also taken into custody, though he is later released. Just to be sure though, von Sturm orders Annemarie to make sure Beall is innocent. She arranges to be rescued from an unwanted "suitor" by Beall, who invites her to his hotel suite. During the course of the evening, he confesses he has fallen in love with her, now going by the name Helena Bohlen. Helena is attracted to him, but when she reads a coded message from von Sturm informing her that he has taken her advice regarding Mata Hari, she abruptly leaves.
Beall persists however. When Helena boards the train to Constantinople, he follows her on the spur of the moment and continues courting her, despite her half-hearted attempts to discourage him. Her assistant Karl watches with growing concern. As they near the Turkish border, she orders Karl to return to Germany so Beall can use his visa. 
Question: What is the code name of the person who informs someone that a fellow spy has fallen in love?

Ex Output:

Fräulein Doktor.