Question: What is the 2010 population of the city in which Solar Energy Research Institute was located? 

full_context: Document 1: Aspen, Colorado: Aspen is the home rule municipality that is the county seat and the most populous municipality of Pitkin County, Colorado, United States. Its population was 6,658 at the 2010 United States Census. Aspen is in a remote area of the Rocky Mountains' Sawatch Range and Elk Mountains, along the Roaring Fork River at an elevation just below 8000 ft above sea level on the Western Slope, 11 mi west of the Continental Divide.
Document 2: Boulder, Colorado: Boulder ( ) is the home rule municipality that is the county seat and the most populous municipality of Boulder County, and the 11th most populous municipality in the U.S. state of Colorado. Boulder is located at the base of the foothills of the Rocky Mountains at an elevation of 5430 ft above sea level. The city is 25 mi northwest of Denver.
Document 3: Fort Collins, Colorado: Fort Collins is the Home Rule Municipality that is the county seat and the most populous municipality of Larimer County, Colorado, United States. Situated on the Cache La Poudre River along the Colorado Front Range, Fort Collins is located 65 miles (105 km) north of the Colorado State Capitol in Denver. With a 2016 estimated population of 161,000, it is the fourth most populous city in Colorado after Denver, Colorado Springs, and Aurora. Fort Collins is a midsize college city, home to Colorado State University.
Document 4: Institute of Energy Conversion: The Institute of Energy Conversion (IEC), located at the University of Delaware is the oldest solar energy research institute in the world. It was established by Karl Boer in 1972 to pioneer research on thin film solar cells. The IEC performs independent research and collaborates with businesses alongside training undergraduate and graduate students in solar cell engineering. In 2011, the organization was the highest recipient of the United States Department of Energy's (DOE) SunShot Initiative and was awarded five grants totaling $9.1 million to research next generation solar cells to reduce the cost of solar cells by 75 percent by the end of the decade.
Document 5: Argonne–Northwestern Solar Energy Research Center: The Argonne–Northwestern Solar Energy Research Center (ANSER Center) is a joint research program between the Argonne National Laboratory and Northwestern University. Michael R. Wasielewski, Professor of Chemistry at Northwestern founded the ANSER center in 2007 and is its current director. The center's goal is to develop the fundamental understanding, materials, and methods necessary to create efficient and economically viable technologies for solar fuels and electricity production. The union of synthesis, measurement, theory, and engineering allows ANSER to create exceptional new energy conversion systems. As part of its $777 million effort to establish Energy Frontier Research Centers, Grants provided by the US Department of Energy will enable the ANSER "to analyse photosynthesis for ways to create more efficient photovoltaic cells and create hybrid solar cells that have both organic and inorganic components."
Document 6: Manitou Springs, Colorado: The city of Manitou Springs is a home rule municipality located in El Paso County, Colorado, United States. The town was founded for its scenic setting and natural mineral springs. The downtown area continues to be of interest to travelers, particularly in the summer, as the downtown area consists of many one-story, adjoining, small shops, restaurants, and pubs, as well as a creekside city park with a children's playground made from unusual materials. Among other services, shops cater to tourist interests such as clothing, candy, souvenirs, and outdoor recreation. The main road through the center of town was one of the direct paths to the base of Pikes Peak. Barr Trail, which winds its way up Pikes Peak, is easily accessible from town. The subdivision Crystal Hills was added to the municipality in the 1960s.
Document 7: Grand Junction, Colorado: The city of Grand Junction is the home rule municipality that is the county seat and the most populous municipality of Mesa County, Colorado, United States. The city has a council–manager form of government, and is the most populous municipality in all of western Colorado. Grand Junction is situated 247 mi west-southwest of the Colorado State Capitol in Denver. As of the 2010 census, the population of the city was 58,566. Grand Junction is the 15th most populous city in the state of Colorado and the most populous city on the Colorado Western Slope. Grand Junction serves as a major commercial and transportation hub within the large area between the Green River and the Continental Divide. It is the principal city of the Grand Junction Metropolitan Statistical Area which had a population of 146,723 in 2010 census.
Document 8: National Sea Grant College Program: The National Sea Grant College Program is a program of the National Oceanic and Atmospheric Administration (NOAA) within the U.S. Department of Commerce. It is a national network of 33 Sea Grant Colleges and universities involved in scientific research, education, training, and extension projects geared toward the conservation and practical use of the coasts, Great Lakes, and other marine areas. The program is administered by the National Oceanic and Atmospheric Administration (NOAA) and is based in Silver Spring, Maryland. No sea rights have actually been granted (though this was considered), only money.
Document 9: Arctic Region Supercomputing Center: The Arctic Region Supercomputing Center (ARSC) was from 1993 to 2015 a research facility organized under the University of Alaska Fairbanks. Located on the University of Alaska Fairbanks (UAF) campus, the Arctic Region Supercomputing Center (ARSC) offered high-performance computing (HPC) and mass storage to the UAF and State of Alaska research communities. Funding for ARSC operations was primarily supplied by UAF, with augmentation through external grants and contracts from various sources such as the National Science Foundation and Lockheed Martin (through the Department of Defense High Performance Computing Modernization Program.)
Document 10: Alutiiq Museum: The Alutiiq Museum or Alutiiq Museum and Archaeological Repository is a non-profit museum and cultural center dedicated to preserving and sharing the cultural traditions of the Koniag Alutiiq branch of Sugpiaq ~ Alutiiq of the Alaska Native people. The museum is a state-of-the-art facility and is located on the first floor of the "Alutiiq Center" of Kodiak, Alaska. Alutiiq Museum is one of three museums in Kodiak. The museum is the seventh museum in Alaska and the second "tribal museum" in the United States to be accredited. The museum provides tours of its exhibits, laboratory and collections storage facilities to educational groups. The museum will accept materials relevant to the prehistoric, historic, and contemporary cultural history of the Native peoples who settled the Koniag Alutiiq Nation. Such materials include, but are not limited to, archaeological, ethnological, photographic, film, audio, archival, and natural history specimens. This cultural center features a gallery, storage for more than 190,000 local artifacts, including faunal materials, ethnobotanical samples, sediment samples, field notes, photographs, and maps and a research laboratory. The Alutiiq Museum is a small repository, but we care for a very large collection with nearly 250,000 items. As a newly founded institution, the Alutiiq Museum sought to develop its policies and practices in professional ways. The Alutiiq Museum also uses its collections for community-building among the Alutiiq. The Alutiiq Museum is supported and governed by the Alutiiq Heritage Foundation and is dedicated to preserving and sharing Alutiiq heritage.
Document 11: Sun grant colleges: The Sun Grant Association is a group of six U.S. universities that serve as regional centers of the Sun Grant Initiative, established by the U.S. Congress in the Sun Grant Research Initiative Act of 2003. They research and develop sustainable and environmentally friendly bio-based energy alternatives. The Department of Transportation, Department of Energy, and the Department of Agriculture are partners in the initiative. The five centers were established at Land-Grant Universities to serve different geographic regions of the United States, in the tradition of the Congress-established programs of sea grant colleges in 1966 and space grant colleges in 1988.
Document 12: Golden, Colorado: Golden is the Home Rule Municipality that is the county seat of Jefferson County, Colorado, United States. Golden lies along Clear Creek at the base of the Front Range of the Rocky Mountains. Founded during the Pike's Peak Gold Rush on 16 June 1859, the mining camp was originally named Golden City in honor of Thomas L. Golden. Golden City served as the capital of the provisional Territory of Jefferson from 1860 to 1861, and capital of the official Territory of Colorado from 1862 to 1867. In 1867, the territorial capital was moved about 12 mi east to Denver City. The United States Census Bureau estimates that the city population was 18,867 in 2010.
Document 13: SERI microalgae culture collection: The SERI microalgae culture collection was a collection from the Department of Energy's Aquatic Species Program cataloged at the Solar Energy Research Institute located in Golden, Colorado. The Aquatic Species Program ended in 1996 after its funding was cut, at which point its microalgae collection was moved to the University of Hawaii. In 1998 the University of Hawaii, partnered with the University of California at Berkeley, received a grant from the National Science Foundation (NSF), for their proposal to develop commercial, medical, and industrial uses of microalgae, as well as new and more efficient techniques for cultivation. This grant was used to form Marine Bioproduct Engineering Center (MarBEC), a facility operating within the University system of Hawaii at Manoa, but connected to corporate interests.
Document 14: Leadville, Colorado: Leadville is the statutory city that is the county seat and only incorporated municipality in Lake County, Colorado, United States. The city population was 2,602 at the 2010 United States Census. Situated at an elevation of 10152 ft , Leadville is the highest incorporated city and the second highest incorporated municipality in the United States. A former silver mining town that lies near the headwaters of the Arkansas River in the heart of the Rocky Mountains, the Leadville Historic District contains many historic structures and sites from its dynamic mining era. In the late 19th century, Leadville was the second most populous city in Colorado, after Denver.
Document 15: Solar Energy Research Center: The Solar Energy Research Center (SERC) is a research center dedicated to identifying methods for converting solar energy to renewable fuel sources. SERC opened on 25 May 2015 at the Lawrence Berkeley National Laboratory (LBL) in Berkeley, California. SERC is housed at the newly opened Chu Hall, named for Stephen Chu.
ground_truth: 18,867