Q: 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 emperors succeeded Emperor Gaozu during his dynasty? Passage 1:Seraphine co-wrote several songs for the band: "Lowdown" (a Top 40 hit for the band), the instrumentals "Prelude to Aire", "Aire", and "Devil's Sweet" from the album Chicago VII, "Little One", "Take Me Back to Chicago", "Show Me the Way", "Birthday Boy" and "Street Player". His writing partner was often David "Hawk" Wolinski, the keyboardist for Rufus featuring Chaka Khan. His song "Street Player" was sampled by The Bucketheads for the dance hit "The Bomb! (These Sounds Fall into My Mind)", and later by rapper Pitbull for the hit "I Know You Want Me (Calle Ocho)" from the album "Rebelution". The song samples "75, Brazil Street" by Nicola Fasano versus Pat Rich, which itself samples "Street Player". "I Know You Want Me" has also been featured in Dance Central, the dancing game for Kinect, Dance Dance Revolution X2 for PlayStation 2, and SingStar Dance, the dancing game for PlayStation Move.
 Passage 2:Both Sui and Tang empires occupied the same location. In 582, Emperor Wen of the Sui dynasty sited a new region southeast of the much ruined Han Dynasty Chang'an to build his new capital, which he called Daxing (大興, “Great Prosperity”). Daxing was renamed Chang'an in year 618 when the Duke of Tang, Li Yuan, proclaimed himself the Emperor Gaozu of Tang. Chang'an during the Tang dynasty (618–907) was, along with Constantinople (Istanbul) and Baghdad, one of the largest cities in the world. It was a cosmopolitan urban center with considerable foreign populations from other parts of Asia and beyond. This new Chang'an was laid out on a north-south axis in a grid pattern, dividing the enclosure into 108 wards and featuring two large marketplaces, in the east and west respectively. Everyday, administrators of the two marketplaces would beat gong for three hundred times in the morning and evening to signify the start and stop of business. People lived in the wards were not allowed to go outside after curfew. Officials with higher-ranking had the privilege to live closer to the central avenue. Chang'an's layout influenced city planning of several other Asian capitals for many years to come. Chang'an's walled and gated wards were much larger than conventional city blocks seen in modern cities, as the smallest ward had a surface area of 68 acres and the largest ward had a surface area of . The height of the walls enclosing each ward were on average 9 to in height. The Japanese built their ancient capitals, Heijō-kyō (today's Nara) and later Heian-kyō or Kyoto, modelled after Chang'an in a more modest scale yet was never fortified. The modern Kyoto still retains some characteristics of Sui-Tang Chang'an. Similarly, the Korean Silla dynasty modeled their capital of Gyeongju after the Chinese capital. Sanggyeong, one of the five capitals of the state of Balhae, was also laid out like Chang'an.
 Passage 3:The son of James and Christina Murray, he was born at Aberdeen in June 1873. He was educated at both Aberdeen Grammar School and Galashiels Academy, before studying engineering at Heriot Watt Engineering School. He served in the Royal Navy, firstly as an assistant engineer, before being promoted to the rank of engineer in June 1902. He served as an engineering instructor at the Britannia Royal Naval College for over twenty years. He was appointed as the superintendent overseeing the construction of in 1902, joining the ship when it was commissioned in 1905. A keen cricketer, Murray made a single first-class cricket appearance for the Royal Navy, making his debut against the British Army cricket team at Lord's in 1913. Batting twice in the match, he was dismissed without scoring in the Royal Navy's first-innings by Harold Fawcus, while in their second-innings he was dismissed for 29 runs by the same bowler. Murray served in the First World War, during which he was seconded to the battleship . He served aboard the ship at the Battle of Jutland on 31 May 1916, when he was killed after the ship exploded and sank.

A:
2