In this task, you're given a question, along with three passages, 1, 2, and 3. Your job is to determine which passage can be used to answer the question by searching for further information using terms from the passage. Indicate your choice as 1, 2, or 3.

Question: How many years did the emperor who designated Amaseia part of the Cappadocia province serve for? Passage 1:Vallow then went on to Sony to produce their first primetime series, Dilbert, with Larry Charles, which ran on UPN for two seasons. She then took over as producer for season three of Family Guy before its brief cancellation. In 2004, Vallow created and produced the animation sequences in the critically acclaimed and award-winning documentary In the Realms of the Unreal directed by Jessica Yu. She produced the MTV series 3 South, the pilot for Comedy Central’s Drawn Together and the presentations for Fox’s American Dad! and an untitled Phil Hendrie pilot, before Fox made the decision to bring back Family Guy for an unprecedented 35 episode order. In order to accommodate producing both Family Guy and American Dad! simultaneously, she built a standalone animation studio for 20th Television and assembled a 200+ person team. She also produced the Fox presentations Two Dreadful Children and Bordertown. Nominated for five Emmys, Vallow was at one time responsible for three half-hours of programming on Sunday nights: Family Guy, American Dad!, and The Cleveland Show.
 Passage 2:Amaseia was captured by the Roman Lucullus in 70 BC from Armenia and was quickly made a free city and administrative center of his new province of Bithynia and Pontus by Pompey. By this time, Amaseia was a thriving city, the home of thinkers, writers and poets, and one of them, Strabo, left a full description of Amaseia as it was between 60 BC and 19 AD. Around 2 or 3 BC, it was incorporated into the Roman province of Galatia, in the district of Pontus Galaticus. Around the year 112, the emperor Trajan designated it a part of the province of Cappadocia. Later in the 2nd century it gained the titles 'metropolis' and 'first city'. After the division of the Roman Empire by emperor Diocletian the city became part of the East Roman Empire (the Byzantine Empire). At this time it had a predominantly Greek-speaking population.
 Passage 3:Ostashenko was born on 19 June 1896 in the village of Bolshaya Lyubshchina, Yanovichskoy volost, Vitebsky Uyezd, Vitebsk Governorate to a peasant family. He graduated from four grades at a gymnasium. During World War I, he was mobilized for military service on 7 August 1915, being sent to the 4th Company of the Reserve Battalion of the Petrograd Lifeguard Regiment in Petrograd. With the battalion, he fought with the Southwestern Front between July 1916 and February 1917, then returned to Petrograd before being demobilized on 13 March 1918. In July, he volunteered for the Red Army, serving in the Vitebsky Uyezd military commissariat as a clerk and instructor organizer. From May 1919 Ostashenko served as a Red Army man and political soldier – a Communist mobilized to conduct political work in the army – in the march battalion of the Vitebsk Reserve Regiment. From July he served as an assistant platoon commander in the 84th Rifle Regiment of the 10th Rifle Division, which fought against the Northwestern Army near Petrograd as part of the 15th Army of the Western Front. He entered the Smolensk Commanders' Infantry Courses in November and upon graduation in June 1920 became a platoon commander in the Rzhev-based 2nd Reserve Regiment. This assignment proved to be brief and a month later, Ostashenko became adjutant of the 4th Landing Detachment for armored trains with the Western Front. He fought with the detachment, which provided landing parties for armored trains, in the Polish–Soviet War and was wounded twice.
2