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'.

Ex Input:
Passage: Smith toured in Japan first in July 2001. On June 7, 2003, Smith won the Pro Wrestling IRON Heavyweight Championship, by defeating Bart Blaxson, and held the title for nearly two years before he dropped it on April 28, 2005 to California wrestler Malachi. He competed for the International Wrestling Association (IWA) in Puerto Rico, where, on November 1, 2003, he defeated Glamour Boy Shane to win the IWA World Heavyweight Championship, which he held for over a month, before losing it back to Glamour Boy Shane. On July 16, 2004, he defeated Slash Venom to win the vacant IWA Hardcore Championship. He lost it later that month to Chet Jablonski. On September 25, 2004, Smith won the New Breed Wrestling Association's top championship, the NBWA Championship, when he and Morgan defeated B.J. Whitmer and ODB in a tag team match, where the person who won the pin, won the Championship. He competed sporadically for the next few months, and won the IWA Intercontinental Heavyweight Championship from Glamour Boy Shane on November 20, 2005. He held the Championship for over a year, before losing it to Slash Venom on December 12, 2005 in a steel cage match.
Link Information: Smith toured in Japan first in July 2001. On June 7, 2003, Smith won the Pro Wrestling IRON Heavyweight Championship, by defeating Bart Blaxson, and held the title for nearly two years before he dropped it on April 28, 2005 to California wrestler Malachi. He competed for the International Wrestling Association (IWA) in Puerto Rico, where, on November 1, 2003, he defeated Glamour Boy Shane to win the IWA World Heavyweight Championship Question: How long did the wrestler who Bison Smith defeated for the IWA Heavyweight Championship on November 1, 2003 hold the title?

Ex Output:
Answer: 5

Ex Input:
Passage: Upon completion of his degree studies at Brera in early 1939, he was drafted by the Italian military for service in World War II. He was deployed to Slovenia, and later to Sicily and Albania, and when his tours of duty were complete, he would participate in art exhibitions. He continued to paint during his service, even when on the front lines, committing to canvas images of "dramatic testimonials" considered prohibited, such as Albanian villages razed by Italian troops. At the end of the war, he also began working on frescoes, glass art, and mosaic art. In 1942, he exhibited works at the Venice Biennale and at the Mostra degli artisti in armi ("Artists in arms") exhibit at the Palazzo delle Esposizioni in Rome, where he presented three watercolours and seven pen drawings, all having a war theme. By this time, he was a sergeant for the Genio Ferrovieri. His first personal exhibition occurred in 1943 and was presented by Raffaello Giolli at the Galleria La Rotonda in Bergamo. He dedicated himself to teaching and the creation of works of sacred art in 1945. He would exhibit at the Venice Biennale again in 1948, 1950, 1956, and 2011, and was invited to exhibit at the Rome Quadriennale in 1952.
Link Information: none Question: How many artists, including Longaretti, were invited to exchibit at the 1952 event?

Ex Output:
Answer: none

Ex Input:
Passage: In 1978, he became the leading tenor of the Saratov Academic Opera and Ballet Theatre when he performed: Vladimir Igorevich in Borodin's Prince Igor, The Prince in Dargomyzhsky's Rusalka, Lensky in Tchaikovsky's Eugene Onegin, Lohengrin in Wagner's Lohengrin and in 1980 he became a member of the National Academic Opera and Ballet Theatre of the Republic of Belarus when he performed: Faust in Gounod's Faust, Alfredo in Verdi's La Traviata, the Duke of Mantua in Verdi's Rigoletto, Prince Kuragin in Prokofiev's War and Peace, Pinkerton In Puccini's Madama Butterfly, Vodemon in Tchaikovsky's Iolanta, Tsar Berendey in Rimsky-Korsakov's The Snow Maiden. As a member of the Opera Theatre (Minsk), in 1982, Polozov made his successful debut with the Bolshoi Theatre when he performed Alfredo opposite and Turiddu in Mascagni's Cavalleria rusticana opposite Makvala Kasrashvili and Elena Obraztsova. In 1983, he made his debut in the role of Faust at the Lithuanian National Opera opposite and Irena Milkeviciute. In 1984, he made debut for the role of the Duke of Mantua at the Bulgarian National Opera and Lensky at the Novosibirsk Opera and Ballet Theatre. In 1984, he performed the role of Alfredo at the Estonian National Opera and Latvian National Opera. In January 1986, another great success followed - Polozov's debut at the Teatro alla Scala in Milano where he sang the role of Pinkerton, which very soon became, along with the role of Rodolfo in La Boheme the most important roles in his repertoire. In May 1986 after winning the prestigious Madama Butterfly singing competition (Tokyo, Japan), Polozov announced his intention to live in the United States. Since his arrival in the USA, Polozov has appeared in numerous highly praised performances throughout the country - from Chicago (city of his American operatic debut for the role of Rodolfo La Boheme with Michael Tilson Thomas) to Boston, New York (his Metropolitan Opera debut in January 1987 in the role of Pinkerton opposite Renata Scotto, to California's Palm Springs and Texas - at the San Antonio Festival ("Tosca") with Julius Rudel, which received highest public and press acclaim. He also appeared in the Metropolitan Opera summer season in parks for the role of Rodolfo and a concert and recording in Washington D.C. (Kennedy Center) of Boris Godunov the role of Dimitry, opposite Ruggero Raimondi as Boris, Galina Vishnevskaya as Marina, Nicolai Gedda as the Simplenton and Paul Plishka as Pimen under the baton of Mstislav Rostropovich. The new 1987/88 season started for Polozov with a great success when he appeared in the role of Calaf in Puccini's Turandot in New York City Opera, and the very same week repeated this role in Munich's Bayerische Staatsoper with Giuseppe Patane. During the 1988/89 season, he performed in San Francisco Opera in the role of Enzo in La Gioconda opposite Eva Marton and in the role of Cavaradossi in Puccini's Tosca at the Canadian Opera Company. Soon he was engaged to perform in Paris, Hamburg, Barcelona, Rome, Lyon, Houston, Miami, Los Angeles, Santiago, Tokyo, and other world opera houses. He sang almost every major tenor roles of the Russian, Italian, German and French repertory and evenly produced voice, brilliant upper register, and stylish singing, are shown to best effect.
Link Information: The National Academic Grand Opera and Ballet Theatre of the Republic of Belarus () is located in a park in the Trinity Hill district of Minsk. Local people call it the "Opierny Teatr" (Belarusian) or the "Opera and Ballet Theatre". It opened on 15 May 1933 Question: How many years after its founding did Polozov join the theatre in Belarus?

Ex Output:
Answer: 47