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'.

Input: Consider Input: 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?

Output: Answer: 4


Input: Consider Input: Passage: Still in Montefiascone, near Viterbo, where he received Pope's appointment, Ottone marched to Arona on 1 April 1263, where he met several nobles fled by Milan for their opposition to Della Torre. Informed on Ottone's presence in Lombardy, Martino sent his troops to put Arona under siege. Ottone, who occupied the near Rocca of Angera, was forced to surrender on 5 May 1263. Returned in Montefiascone, Ottone lost his powerful ally Urban IV, died on October 1264. Della Torre, however, never get Raimondo formal appointment, and after Martino's death, the once loyal Pallavicino family switched side to Visconti, scheming the assassination of Paganino della Torre, podestà of Vercelli, on January 1266. In response, the new lord of Milan Napoleone della Torre executed 53 nobles, suspected of conjuring. This vicious act undermined Della Torre's grab on Milan, aggravated by Pope Gregory X, a Visconti of Piacenza, who in 1273 confirmed Ottone Visconti as legal Archbishop of Milan. Napoleone della Torre reacted exiling all noble families who don't supported him, causing the formation of an émigré coalition in Novara and Pavia. Using their financial and military support, Ottone's nephew Teobaldo Visconti led an army in Vercelli, occupying Castelseprio. Defeated by Torriani's forces, Teobaldo fled to Lurate, near Como, but after a battle in Gallarate, his last forces were defeated and he was beheaded by Napoleone della Torre in 1276. Ottone, returned in Lombardy in the same year, recruited his supporters near Desio, where he was canon, and after a bloody battle on January 1277, Visconti emerged victorius. Napoleone della Torre was imprisoned and tortured to death in Castel Baradello, while his brother Francesco was executed after the battle. Ottone entered in Milan on 22 January 1277, becoming the first Visconti de facto ruler of the city.
 Link Information: Novara was founded around 89 BC Question: Which city that formed the coalition against Della Torre was found first?

Output: Answer: Novara


Input: Consider Input: Passage: In November 1850, United States Army Captain Samuel P. Heintzelman met with Yuman leaders at the Salton Sea to negotiate a peace. Apparently successful, the captain returned to Vallecitos where he began preparing for his new orders which were to establish a post at Yuma Crossing to protect the area from outlaws and hostile natives. The column, thinned by desertions of soldiers to the goldfields, left San Diego on October 3, 1850 with about 100 men of the 2nd Infantry while a fourth company marched to build a post with a warehouse at Vallecitos, as a supply depot for the Yuma post. The expedition reached Yuma Crossing on November 27, and began the construction of Camp Yuma, then just a camp of tents, a hospital and an orchard. American forces included ninety-two enlisted men, two officers and a medical officer for the hospital. Heintzelman's command was supplied via steamship from California, through the California Gulf and up the Colorado to the fort. This was difficult however due to the Colorado's strong current and by the time the steamships could make it all the way around Baja California, they had to manage the Colorado which took time. Thus the Californians had to rely on supplies sent overland, it was difficult as well but proved to be successful.
 Link Information: Samuel Peter Heintzelman (September 30, 1805 – May 1, 1880) Question: How old was the army captain who met with Yuman leaders when they negotiated a peace?


Output: Answer: 45