Question: Who is the new president of the country that provided the most legal immigrants in 2013, of all countries on the continent where most of lithium comes from?

<P0-S0> Ecuador, Colombia, Guyana, Peru, and Brazil were the top source countries from South America for legal immigrants to the New York City region in 2013; the Dominican Republic, Jamaica, Haiti, and Trinidad and Tobago in the Caribbean; Egypt, Ghana, and Nigeria from Africa; and El Salvador, Honduras, and Guatemala in Central America. <P0-S1> Amidst a resurgence of Puerto Rican migration to New York City, this population had increased to approximately 1.3 million in the metropolitan area as of 2013. <SEP> <P1-S0> As of 2015, most of the world's lithium production is in South America, where lithium - containing brine is extracted from underground pools and concentrated by solar evaporation. <P1-S1> The standard extraction technique is to evaporate water from brine. <P1-S2> Each batch takes from 18 to 24 months. <SEP> <P2-S0> rouhani was deputy speaker of the fourth and fifth terms of the parliament of iran (majlis) and secretary of the supreme national security council from 1989 to 2005. in the latter capacity, he was the country's top negotiator with the eu three, uk, france, and germany, on nuclear technology in iran, and has also served as a shi'ite ijtihadi cleric, and economic trade negotiator. <P2-S1> he has expressed official support for upholding the rights of ethnic and religious minorities. <P2-S2> in 2013, he appointed former industries minister eshaq jahangiri as his first vice-president.on 7 may 2013, rouhani registered for the presidential election that was held on 14 june 2013. he said that, if elected, he would prepare a "civil rights charter", restore the economy and improve rocky relations with western nations. <P2-S3> rouhani is frequently described as a moderate. <P2-S4> he was elected as president of iran on 15 june, defeating tehran mayor mohammad bagher ghalibaf and four other candidates. <P2-S5> he took office on 3 august 2013. in 2013, time magazine named him in its list of the 100 most influential people in the world. <P2-S6> in domestic policy, he encourages personal freedom and free access to information, has improved women's rights by appointing female foreign ministry spokespeople, and has been described as a centrist and reformist who has improved iran's diplomatic relations with other countries through exchanging conciliatory letters. <P2-S7> rouhani won re-election in the 2017 election with 23,636,652 votes (57.1%). <P2-S8> he became the third iranian president, after mohammad khatami and mahmoud ahmadinejad, to win a presidential victory as an incumbent with an increased electoral mandate. <SEP> <P3-S0> General elections were held in Ecuador on 19 February 2017 alongside a referendum on tax havens. <P3-S1> Voters elected a new President and National Assembly. <P3-S2> Incumbent President Rafael Correa of the PAIS Alliance was not eligible for re-election, having served two terms. <P3-S3> In the first round of the presidential elections, PAIS Alliance candidate Lenín Moreno received 39% of the vote. <P3-S4> Although he was more than 10% ahead of his nearest rival, Guillermo Lasso of the Creating Opportunities party, Moreno was just short of the 40% threshold required to avoid a run - off. <P3-S5> As a result a second round was held on 2 April. <P3-S6> In the second round Moreno was elected President with 51.16% of the vote. <SEP> <P4-S0> the constitution also provides for appointment of one of the elected senators to serve as president pro tempore. <P4-S1> this senator presides when the vice president is absent from the body. <P4-S2> the president pro tempore is selected by the body specifically for the role of presiding in the absence of (as the meaning of pro tempore, literally ``for the time being '') the actual presiding officer. <P4-S3> by tradition, the title of president pro tempore has come to be given more - or-less automatically to the most senior senator of the majority party. <P4-S4> in actual practice in the modern senate, the president pro tempore also does not often serve in the role (though it is their constitutional right to do so). <P4-S5> instead, as governed by rule i, they frequently designate a junior senator to perform the function.