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 Q]: Passage: Self-titled debut album WarCry was released on April 17, 2002. Guitarists Pablo García and Fernando Mon appeared only as guest musicians on the debut album, but became full-time members on 2002 along with keyboardist Manuel Ramil and bassist Alvaro Jardón. Second album El Sello De Los Tiempos was released on December 1, 2002. At the end of 2003, Jardón left the band due to musical and personal issues. On January 1, 2004 was released the third album Alea Jacta Est striking all the music stores around Spain. On the first concert of the tour supporting the album, the band presented Roberto García, formerly of Avalanch, as Jardón's replacement. Their fourth studio album, ¿Dónde Está La Luz?, was released on February 1, 2005, considered by critics "their heaviest album to date". They embarked on a supporting tour throughout Spain. WarCry played a sold-concert in Madrid. That performance was released on February 27, 2006 as a live album, named Directo A La Luz and soon was certified gold. La Quinta Esencia was their fifth album, released on September 18, 2006 with a great acceptance by the fans and the press, taking them to the highest positions on the Spanish charts. Sixth album was set to be released on May/June, 2008, but after the lineup changes they pushed it back to September, 2008. Víctor García stated that "this album will express much duality in human beings — good and evil."
 Link Information: none Question: What are the names of the La Quinta Esencia hit singles?
[EX A]: Answer: none

[EX Q]: Passage: His grandfather was architect Alexandros Tzonis who designed many buildings in Thessaloniki during the Interwar period. Tzonis studied architecture at the National Technical University of Athens (1956 -1961). During the period of his university studies, he was instructed privately in mathematics (Pandelis Rokos) and art (Spyros Papaloukas) meeting regularly with the architect Dimitris Pikionis who was by then retired from teaching. He worked professionally as a stage designer in the theatre and art director in the cinema. (Never on Sunday, 1960 directed by Jules Dassin). In 1961 he moved to the United States as a Ford Fellow, where he pursued his studies at Yale University, briefly in the Drama School and soon after in the School of Art and Architecture under Paul Rudolph, Shadrach Woods, Robert Venturi, and Serge Chermayeff. In 1965, with sponsorship from the Twentieth Century Fund he was appointed fellow at Yale where he carried out pioneering research on Planning and Design Methodology in collaboration with Chermayeff with whom he co-authored The Shape of Community (1972). In 1968 he was invited to teach at the Graduate School of Design at Harvard University by Jerzy Soltan and Josep Lluis Sert appointed assistant professor. There he taught and did advanced research in analytical design methods in association with Walter Isard and Ovadia Salama, receiving outside advice from Anatol Rapaport and Seymour Papert. In collaboration with Ovadia Salama, introducing the newly developed method ELECTRE he worked out a new method for multi-criteria evaluation of architectural projects (1975). In collaboration with Michael Freeman, Etienne de Cointet, and his undergraduate student Robert Berwick, who became later professor of computational linguistics at MIT, he developed a method for design discourse analysis applied to the case of 17th and 18th century texts of French architectural theory, a project funded by the French Government carried out at Harvard and in France (1975).
 Link Information: none Question: In which country did Tzonis studied architecture?
[EX A]: Answer: none

[EX Q]: Passage: Mayer claimed his first victories over United States Army Air Forces (USAAF) four-engine bombers when he shot down two B-17 Flying Fortresses and a B-24 Liberator on 23 November 1942. Together with fellow fighter ace Georg-Peter Eder, Mayer developed the head-on attack as the most effective tactic against the Allied daylight heavy combat box bomber formations. He received the Knight's Cross of the Iron Cross with Oak Leaves on 16 April 1943 after 63 victories. On 1 July 1943, he replaced Walter Oesau as commander of JG 2. He claimed his 90th victory on 31 December 1943 and on 5 February 1944 became the first pilot on the Channel Front to reach 100 victories. Mayer was killed in action on 2 March 1944 while leading an attack on a USAAF bomber formation; he was shot down by P-47 Thunderbolt escort fighters near Montmédy, France. He was posthumously awarded the Knight's Cross of the Iron Cross with Oak Leaves and Swords.
 Link Information: Walter "Gulle" Oesau (28 June 1913 – 11 May 1944) Question: How old was the commander Egon Mayer replaced as commander of JG 2?
[EX A]:
Answer: 30