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 long was Ron Hughes Commander? Passage 1: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.
 Passage 2:Abū al-Ḥasan Alī ibn al-Abbās ibn Jūrayj (), also known as Ibn al-Rūmī (born Baghdad in 836; died 896), was the grandson of George the Greek (Jūraij or Jūrjis i.e. Georgius) and a popular poet of Baghdād in the Abbāsid-era. By the age of twenty he earned a living from his poetry. His many political patrons included the Tahirid ruler Ubaydallah ibn Abdallah ibn Tahir, Abbasid caliph Al-Mu'tamid's minister the Persian Isma'il ibn Bulbul, and the politically influential Nestorian family Banū Wahb. He was a Shiite with Mutazilite leanings. He died of illness at the age of 59. His early biographer Ibn Khallikān relates an account that he was given poisoned biscuits in the presence of the caliph Al-Mu'tadid on the orders of his vizier, Al-Qasim ibn Ubayd Allah, whom Ibn al-Rumī had satirised viciously. In another account his death is attributed to suicide. In the tenth-century his Dīwān (collected poetry), that had been transmitted orally by al-Mutanabbī, was arranged and edited by Abū Bakr ibn Yaḥyā al-Ṣūlī, and included in the section of his book Kitāb Al-Awrāq () on muḥadathūn (modern poets).
 Passage 3: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.
3