instruction:
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'.
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Passage: Salvatore di Pietro was born in Palermo, Italy, on 15 June 1830. He entered the Society of Jesus (Jesuits) in October 1845 and was ordained a priest on 2 June 1859. He arrived in British Honduras (now known as "Belize") on 22 March 1869. On May 12 he suffered an attack of yellow fever. His superiors transferred him to Guatemala, where he preached missions to the Garifuna. He was appointed head of the missions in northern Guatemala, but along with 80 other Jesuits fled the country in September 1871 when the Liberals gained control and persecuted the Catholic Church. In 1872 president Jose Maria Medina invited him to Spanish Honduras to found a college in the capital Comayagua. He began by preaching missions in Omoa and San Pedro Sula. However, the Liberals took control of Spanish Honduras also and he returned to Belize.
 Link Information: The Society of Jesus (SJ; ) is a religious order of the Catholic Church headquartered in Rome. It was founded by Ignatius of Loyola with the approval of Pope Paul III in 1540 Question: When was the society di Pietro joined in 1845 founded?
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Answer: 1540


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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?
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Answer: none


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Passage: Olvir Hnufa or Ölvir hnúfa was a Norwegian commander in a clan and poet of the late ninth and early tenth centuries, known from, among other sources, Egil's Saga, Skaldatal and the Prose Edda. Olvir was the son of the viking Berle-Kari and brother-in-law of Kveldulf Bjalfason, who married Olvir's sister Salbjorg Karadottir; he was thus uncle to Skallagrim and Thorolf Kveldulfsson and great uncle to the famous poet Egil Skallagrimsson. Olvir also had a brother named Eyvind Lambi. Olvir was a prominent member of the court of King Harald Fairhair, who united Norway under his rule in the late ninth or early tenth century. Among other famous poets, he served as one of King Harald's court poets. He also served as a warrior in Harald's retinue, and fought at the pivotal Battle of Hafrsfjord on the king's flagship. He is best known for his involvement in the conflict between Harald and Olvir's kinsman Thorolf Kveldulfsson, which ended with the latter's death. Only a few fragments of Olvir's poetry survive.
 Link Information: none Question: Did Olvir Hnufa's father die before his brother-in-law?
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Answer: none