Instructions: 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.
Input: Question: What is the name of the actor who played the fourth version of the hero in Dalek Attack? Passage 1:Dunstan was then posted to the 1st Battalion, Royal Australian Regiment (1 RAR) as second-in-command in 1953. He then saw service in Korea including a period as Military Assistant to the Commander in Chief of the British Commonwealth Forces Korea, and was appointed a Member of the Order of the British Empire in the 1954 New Year Honours. Between May 1964 and February 1965, Dunstan commanded 1 RAR, before later holding an appointment at the 1st Recruit Training Battalion. Having reached the rank of colonel, in early 1968 he was deployed to Vietnam as deputy commander of the 1st Australian Task Force (1 ATF). He took over from Brigadier Ron Hughes as Commander of the 1 ATF on 21 May 1968 during the Battle of Coral–Balmoral. For his services during this battle, he was appointed a Commander of the Order of the British Empire in 1969.
 Passage 2:Dalek Attack is a computer game based on the long-running British science fiction television series Doctor Who, in which the player controls the Doctor and fights recurring adversaries, the Daleks and other enemies. In most versions of the game, the player can choose between playing as the Fourth, Fifth or Seventh Doctor; in the MS-DOS and Amiga versions, the player can play as the Second, Fourth or Seventh Doctor, and in the ZX Spectrum version only the Seventh Doctor was available. A second player may play as the Doctor's companion (Ace or a UNIT soldier, although in the Spectrum version only Ace is available). K-9 also makes appearances later in the game as does Davros, creator of the Daleks in the TV series, as the final end of level boss. The game is set in London, Paris, New York, Tokyo and Skaro.
 Passage 3:The area has been settled extensively since prehistoric times, and numerous Jōmon period sites have been found by archaeologists, the most famous being the Sannai-Maruyama Ruins located just southwest of the city center dating to 5500-4000 BC, and the Komakino Site slightly farther south dating to around 4000 BC. The large scale of these settlements revolutionized theories on Jōmon period civilization. During the Heian period, the area was part of the holdings of the Northern Fujiwara clan, but remained inhabited by the Emishi people well into the historic period. After the fall of the Northern Fujiwara in the Kamakura period, the territory was part of the domain assigned to the Nambu clan, and into the Sengoku period, it came under the control of the rival Tsugaru clan, whose main castle was located in Namioka. After the start of the Edo period, what would become the core of present-day Aomori was a minor port settlement in the Hirosaki Domain called . The town was rebuilt in 1626 under orders of the daimyō, Tsugaru Nobuhira and renamed "Aomori", but this name did not come into common use until after 1783; however, the historical accuracy of this claim is debated since there is no written material from the time to definitively connect Utō to Aomori. Some evidence even claims that Aomori and Utō co-existed in different parts the city in its current state. It wasn't until 1909 that a local scholar claimed that the village of Utō became Aomori.

Output:
2