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: In what year did construction begin on the roadway that the San Bernadino Line follows after crossing the Los Angeles River? Passage 1:After leaving Union Station and crossing the Los Angeles River, the line follows the San Bernardino Freeway and El Monte Busway until just after the Cal State L.A. station; it then runs in the median of the San Bernardino Freeway to the El Monte Station along the former route of the Pacific Electric Railway's San Bernardino Line. Starting at El Monte, the line parallels the Union Pacific's Sunset Route (ex-Southern Pacific) for a few miles before turning northeast at Bassett onto a Southern Pacific branch. At (a former Southern Pacific/Pacific Electric-Santa Fe crossing), it switches to the Santa Fe; from Claremont to just west of San Bernardino it follows what was the Santa Fe's Pasadena Subdivision (and before that the Second District of the LA Division, the Santa Fe passenger main line). The San Bernardino Line is mostly single track with 6 passing sidings and short sections of double track near Covina, between Pomona and Montclair, and west of Fontana.
Passage 2:Angelo Correia is a Portuguese manager, engineer and politician, former Minister of Internal Administration of the Portuguese Government under the leadership of Anibal Cavaco Silva. He was also member of the Portuguese Parliament (the Assembleia da Republica) for the Portuguese Social Democrats (PSD) from 1976 to 1995. He was awarded a degree in chemical-industrial engineering by the Instituto Superior Tecnico of the Technical University of Lisbon (1968). Angelo Correia was appointed chairman of the company Fomentinvest, and worked at that company with Pedro Passos Coelho during the 2000s. Correia, an experienced member of PSD, is a close friend of Passos Coelho, both inside their party and corporate governance careers, and is considered Passos Coelho's political mentor.
Passage 3:From the founding of modern Singapore in 1819 until 1826, Singapore was headed by two residents in succession. Following Singapore's amalgamation into the Straits Settlements in 1826, it was governed by a governor together with a legislative council. An executive council of the Straits Settlements was introduced in 1877 to advise the Governor but wielded no executive power. In 1955, a Council of Ministers was created, appointed by the Governor on the recommendation of the Leader of the House. Constitutional talks between Legislative Assembly representatives and the Colonial Office were held from 1956 to 1958, and Singapore gained full internal self-government in 1959. The governor was replaced by the Yang di-Pertuan Negara, who had power to appoint to the post of prime minister the person most likely to command the authority of the assembly, and other ministers of the Cabinet on the prime minister's advice. In the 1959 general elections, the People's Action Party (PAP) swept to power with 43 out of the 51 seats in the assembly, and Lee Kuan Yew became the first prime minister of Singapore. The executive branch of the Singapore Government remained unchanged following Singapore's merger with Malaysia in 1963, and subsequent independence in 1965. The PAP has been returned to power in every general election and has thus formed the Cabinet since 1959. The government is generally perceived to be competent in managing the country's economy and largely free from political corruption. On the other hand, it has been criticized for using unfair election tactics, violating freedom of speech and its excessive use of the death penalty (by hanging) for non-violent crimes.

Output:
1