input: Hadfield was selected to become one of four new Canadian astronauts from a field of 5,330 applicants in June 1992. Three of those four (Dafydd Williams, Julie Payette and Hadfield) have flown in space. He was assigned by the Canadian Space Agency (CSA) to the NASA Johnson Space Center in Houston, Texas in August, where he addressed technical and safety issues for Shuttle Operations Development, contributed to the development of the glass shuttle cockpit, and supported shuttle launches at the Kennedy Space Center, in Florida. In addition, Hadfield was NASA's Chief CAPCOM, the voice of mission control to astronauts in orbit, for 25 space shuttle missions. From 1996 to 2000, he represented CSA astronauts and coordinated their activities as the Chief Astronaut for the CSA.  He was the Director of Operations for NASA at the Yuri Gagarin Cosmonauts Training Center (GCTC) in Star City, Russia from 2001 until 2003. Some of his duties included co-ordination and direction of all International Space Station crew activities in Russia, oversight of training and crew support staff, as well as policy negotiation with the Russian Space Program and other International Partners. He also trained and became fully qualified to be a flight engineer cosmonaut in the Soyuz TMA spacecraft, and to perform spacewalks in the Russian Orlan spacesuit.  Hadfield is a civilian CSA astronaut, having retired as a colonel from the Canadian Armed Forces in 2003 after 25 years of military service. He was Chief of Robotics for the NASA Astronaut Office at the Johnson Space Center in Houston, Texas from 2003-2006 and was Chief of International Space Station Operations from 2006-2008. In 2008 and 2009, he trained as a back-up to Robert Thirsk on the Expedition 21 mission. In May 2010, Hadfield served as the commander of the NEEMO 14 mission aboard the Aquarius underwater laboratory, living and working underwater for fourteen days. NASA announced in 2010 that Hadfield would become the first Canadian commander of the International Space Station, leading Expedition 35 after its launch on 19 December 2012. His craft docked with the station on 21 December. He remained on the station for five months, transferring control to Pavel Vinogradov and departing on 13 May 2013.  In June 2013, one month after completing his third trip to space, Hadfield announced his retirement from the Canadian Space Agency, effective 3 July 2013. Hadfield stated that after living primarily in the United States since the 1980s for his career, he would be moving back to Canada, "making good on a promise I made my wife nearly 30 years ago -- that yes, eventually, we would be moving back to Canada." He noted that he plans to pursue private interests outside government there.  Hadfield is enthusiastic about the prospects for a manned mission to Mars, and when asked in 2011 if he would consider a one-way journey to Mars to be the first to visit, he said "I would be honoured to be given the opportunity."

Answer this question "What did he do after Star City, Russia?"
output: was Chief of Robotics for the NASA Astronaut Office at the Johnson Space Center in Houston, Texas from 2003-2006

Question: Maurice Robert "Mike" Gravel (; born May 13, 1930) is an American politician who was a Democratic United States Senator from Alaska from 1969 to 1981 and a candidate in the 2008 U.S. presidential election. Born and raised in Springfield, Massachusetts, by French-Canadian immigrant parents, Gravel served in the U.S. Army in West Germany, and he later graduated from the Columbia University School of General Studies. He moved to Alaska in the late 1950s, becoming a real estate developer and entering politics. He served in the Alaska House of Representatives from 1963 to 1966 and also became Speaker of the Alaska House.

Gravel "decided to become a pioneer in a faraway place," and moved to pre-statehood Alaska in August 1956, without funds or a job, looking for a place where someone without social or political connections could be a viable candidate for public office. Alaska's voting age of 19, less than most other states' 21, played a role in his decision, as did its newness and cooler climate. Broke when he arrived, he immediately found work in real estate sales until winter arrived. Gravel then was employed as a brakeman for the Alaska Railroad, working the snow-clearing train on the Anchorage-Fairbanks run. Subsequently, he opened a small real estate brokerage in Anchorage (the Territory of Alaska not requiring a license) and saved enough so as not to have to work the railroad again. Gravel joined the Anchorage Unitarian Universalist Fellowship, and continued a sporadic relationship with the movement throughout his life.  Gravel married Rita Jeannette Martin, who had been Anchorage's "Miss Fur Rendezvous" of 1958, on April 29, 1959. They had two children, Martin Anthony Gravel and Lynne Denise Gravel, born c. 1960 and 1962 respectively.  Meanwhile, he went to Washington, D.C. in 1957 to campaign for Alaskan statehood via the "Tennessee Plan": dressed as Paul Revere, he rode with a petition to the steps of the U.S. Capitol. Seeing Alaska as a wide-open place with no political establishment or entrenched interests, and using the slogan "Gravel, the Roadbed to Prosperity", he ran for the territorial legislature in 1958 but lost. He went on a national speaking tour concerning tax reform in 1959, sponsored by the Jaycees. He ran without avail for the City Council in Anchorage in 1960. During this time, he had become a successful real estate agent; after the 1960 election, he became a property developer in a mobile home park on the outskirts of Anchorage. A partner ran into financial difficulty, however, and the project went into Chapter 11 bankruptcy and Gravel was forced out in 1962.

Using a quote from the above article, answer the following question: When did he stop working the railroad?
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Answer:
Gravel married Rita Jeannette Martin, who had been Anchorage's "Miss Fur Rendezvous" of 1958, on April 29, 1959.