TASK DEFINITION: In this task, you're given a passage, further information available on a particular linked term from the statement, and a question. Your job is to generate the answer to the question by using the information provided. If there is no clear answer obtainable, output 'none'.
PROBLEM: Passage: Tomić belonged to the first class of six Serbian pilots trained in France in 1912. In August 1914, he participated in the first aerial dogfight of the war, when he exchanged gunfire with an Austro-Hungarian plane over western Serbia. In the winter of 1915, during the Serbian Army's retreat across Albania to the Greek island of Corfu, he evacuated General Petar Bojović from Scutari by plane, delivered mail by air and transported the Serbian Government's gold and hard currency reserves from Niš to keep them from falling into enemy hands. Following the occupation of Serbia by the Central Powers, Tomić went to France and flew over the Western Front, where he had one confirmed kill. He returned to the Balkans in late 1916, conducted combat missions over Bulgarian-occupied Macedonia and shot down one enemy plane. Tomić continued flying after the war and became head of the Royal Yugoslav Air Force's pursuit squadron in Novi Sad. During World War II, he was captured by the Germans and detained as a prisoner of war. Tomić left Yugoslavia following the war and settled in the United States with his wife. He died in Chicago in 1962.
 Link Information: The Central Powers consisted of the German Empire and the Austro-Hungarian Empire at the beginning of the war. The Ottoman Empire joined the Central Powers later in 1914. In 1915, the Kingdom of Bulgaria joined the alliance. Question: How many nations were part of the powers that occupied Serbia?

SOLUTION: Answer: 4

PROBLEM: Passage: He started his career with Shrewsbury Town in 1988, and after being voted onto the PFA Team of the Year, moved on to Manchester City for £500,000 in October 1993. In August 1995 he transferred to Portsmouth for £200,000, moving on to Peterborough United for £225,000 in March 1996. He joined Leyton Orient for £65,000 in March 1997, where he stayed for four years, interrupted by short spells at Wrexham (on loan) and Port Vale. He played for Luton Town between July 2001 and 2003 following a £65,000 transfer, later dropping into non-league football with Harlow Town, Braintree Town, Brentwood Town, and Maldon Town. He also represented Wales at under-21 level and also for the "B" team. Within his three spells with Leyton Orient he achieved cult status and in 2004 received 9% of the vote for all-time cult hero behind Peter Kitchen and Terry Howard.
 Link Information: Founded in 1880 Question: When was the team founded that Griffiths moved to in October 1993?

SOLUTION: Answer: 1880

PROBLEM: Passage: Michele Crider is a graduate of Quincy Senior High School in Quincy, IL. She studied voice at Culver-Stockton College and then at the University of Iowa, where she performed her first opera role in Madama Butterfly and came to the attention of University of Iowa alumnus Simon Estes. She won the District Metropolitan Opera Auditions twice. Afterwards she left Iowa and went to Zurich where she continued her studies at the studio of the Zurich Opera House. In 1988 she was the finalist of the Luciano Pavarotti competition. In 1989 she won one of the three first prizes at the Geneva International Music Competition. This prize directly led to her engagement as Leonora in Il trovatore in Dortmund and to her participation in the International Grand Prix, which she then won. Crider has recorded Amelia in Un ballo in maschera for Teldec under Carlo Rizzi, Elena and Margherita in Mefistofele under the baton of Riccardo Muti for BMG Classics, Verdi's Requiem under Richard Hickox with the London Symphony Orchestra for Chandos Records and the role of Gerhilde in Die Walküre on Decca under Christoph von Dohnanyi.
 Link Information: none Question: Who won the other two first prizes at he 1989 Geneva International Music Competition?

SOLUTION:
Answer: none