Question:
Anton Grigorevich Rubinstein (Russian: Anton Grigor'evich Rubinshtein, tr. Anton Grigorevich Rubinshteyn; November 28 [O.S. November 16] 1829 - November 20 [O.S. November 8] 1894) was a Russian pianist, composer and conductor who became a pivotal figure in Russian culture when he founded the Saint Petersburg Conservatory. He was the elder brother of Nikolai Rubinstein who founded the Moscow Conservatory. As a pianist, Rubinstein ranks among the great 19th-century keyboard virtuosos.
Rubinstein was born to Jewish parents in the village of Vikhvatinets in the Podolia Governorate, Russian Empire (now known as Ofatinti in Transnistria, Republic of Moldova), on the Dniestr River, about 150 kilometres (93 mi) northwest of Odessa. Before he was 5 years old, his paternal grandfather ordered all members of the Rubinstein family to convert from Judaism to Russian Orthodoxy. Although he was raised as a Christian, Rubinstein would later return to being atheist. Rubinstein's father opened a pencil factory in Moscow. His mother, a competent musician, began giving him piano lessons at five, until the teacher Alexander Villoing heard and accepted Rubinstein as a non-paying student. Rubinstein made his first public appearance at a charity benefit concert at the age of nine. Later that year Rubinstein's mother sent him, accompanied by Villoing, to Paris where he sought unsuccessfully to enroll at the Paris Conservatoire. Rubinstein and Villoing remained in Paris for a year. In December 1840, Rubinstein played in the Salle Erard for an audience that included Frederic Chopin and Franz Liszt. Chopin invited Rubinstein to his studio and played for him. Liszt advised Villoing to take him to Germany to study composition; however, Villoing took Rubinstein on an extended concert tour of Europe and Western Russia. They finally returned to Moscow in June 1843. Determined to raise money to further the musical careers of both Anton and his younger brother Nikolai, their mother sent Rubinstein and Villoing on a tour of Russia, following which the brothers were dispatched to Saint Petersburg to play for Tsar Nicholas I and the Imperial family at the Winter Palace. Anton was 14 years old; Nikolai was eight.
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what year was that again?

Answer:
Rubinstein and Villoing remained in Paris for a year. In December 1840, Rubinstein played in the Salle Erard for an audience that included Frederic Chopin and Franz Liszt.

input: In late 2008, Brennan was reportedly the top choice to become the next Director of the CIA in the incoming Obama administration. However, Brennan withdrew his name from consideration because of opposition to his CIA service under President George W. Bush and past public statements he had made in support of enhanced interrogation and the transfer of terrorism suspects to countries where they might be tortured (extraordinary rendition). President Obama then appointed him to be his Deputy National Security Advisor for Homeland Security and Counterterrorism, the President's chief counterterrorism advisor and a position that did not require Senate confirmation. In August 2009, Brennan criticized some Bush-administration anti-terror policies, saying that waterboarding had threatened national security by increasing the recruitment of terrorists and decreasing the willingness of other nations to cooperate with the U.S. He also described the Obama administration's focus as being on "extremists" and not "jihadists". He said that using the second term, which means one who is struggling for a holy goal, gives "these murderers the religious legitimacy they desperately seek" and suggests the US is at war with the religion of Islam. In an early December 2009 interview with the Bergen Record, Brennan remarked, "the U.S. intelligence and law enforcement communities have to bat 1.000 every day. The terrorists are trying to be successful just once". At a press conference days after the failed Christmas Day bomb attack on Northwest Airlines Flight 253 by Umar Farouk Abdulmutallab, Brennan said U.S. intelligence agencies did not miss any signs that could have prevented the attempt but later said he had let the President down by underestimating a small group of Yemeni terrorists and not connecting them to the attempted bomber. Within two weeks after the incident, however, he produced a report highly critical of the performance of U.S. intelligence agencies, concluding that their focus on terrorist attempts aimed at U.S. soil was inadequate. In February 2010, he claimed on Meet the Press that he was tired of Republican lawmakers using national security issues as political footballs, and making allegations where they did not know the facts. Brennan was present in the Situation Room in May 2011 when the United States conducted the military operation that killed Osama bin Laden. He called President Obama's decision to go forward with the mission one of the "gutsiest calls of any president in memory." In the aftermath of the operation, Brennan said that the U.S. troops in the raid had been "met with a great deal of resistance," and bin Laden had used a woman as a human shield.

Answer this question "Was the search for Osama bin Laden already underway when he took on his position?"
output: Brennan was present in the Situation Room in May 2011 when the United States conducted the military operation that killed Osama

Answer the question at the end by quoting:

John Charles Fremont or Fremont (January 21, 1813 - July 13, 1890) was an American explorer, politician, and soldier who, in 1856, became the first candidate of the Republican Party for the office of President of the United States. During the 1840s, when he led five expeditions into the American West, that era's penny press and admiring historians accorded Fremont the sobriquet The Pathfinder. During the Mexican-American War, Fremont, a major in the U.S. Army, took control of California from the California Republic in 1846.
In the fall of 1853, Fremont embarked on another expedition to identify a viable route for a transcontinental railroad along the 38th parallel. The party journeyed between Missouri and San Francisco, California, over a combination of known trails and unexplored terrain. A primary objective was to pass through the Rocky Mountains and Sierra Nevada Mountains during winter to document the amount of snow and the feasibility of winter rail passage along the route. His photographer (daguerreotypist) was Solomon Nunes Carvalho. Fremont followed the Santa Fe Trail, passing Bent's Fort before heading west and entering the San Luis Valley of Colorado in December. The party then followed the North Branch of the Old Spanish Trail, crossing the Continental Divide at Cochetopa Pass and continuing west into central Utah. But following the trail was made difficult by snow cover. On occasion, they were able to detect evidence of Captain John Gunnison's expedition, which had followed the North Branch just months before. Weeks of snow and bitter cold took its toll and slowed progress. Nonessential equipment was abandoned and one man died before the struggling party reached the Mormon settlement of Parowan in southwestern Utah on February 8, 1854. After spending two weeks in Parowan to regain strength, the party continued across the Great Basin and entered the Owens Valley near present-day Big Pine, California. Fremont then journeyed south and crossed the Sierra Nevada Mountains and entered the Kern River drainage, which was followed west to the San Joaquin Valley. Fremont arrived in San Francisco on April 16, 1854. Having completed a winter passage across the mountainous west, Fremont was optimistic that a railroad along the 38th Parallel was viable and that winter travel along the line would be possible through the Rocky Mountains.

Where did his expedition in 1853 go?
through the Rocky Mountains and Sierra Nevada Mountains during winter