Question: What is the population of the location where Centre for Science and Environment is headquartered?

full_context: Document 1: List of languages by number of native speakers in India: Hindi is the most widely spoken language in northern parts of India. The Indian census takes the widest possible definition of ``Hindi ''as a broad variety of`` Hindi languages''. According to 2001 Census, 53.6% of Indian population declared that they speak Hindi either as first or second language, in which 41% of them have declared it as their native language or mother tongue. 12.6% Indians declared that they can speak English as a second language.
Document 2: Philadelphia: As of 2010[update], 79.12% (1,112,441) of Philadelphia residents age 5 and older spoke English at home as a primary language, while 9.72% (136,688) spoke Spanish, 1.64% (23,075) Chinese, 0.89% (12,499) Vietnamese, 0.77% (10,885) Russian, 0.66% (9,240) French, 0.61% (8,639) other Asian languages, 0.58% (8,217) African languages, 0.56% (7,933) Cambodian (Mon-Khmer), and Italian was spoken as a main language by 0.55% (7,773) of the population over the age of five. In total, 20.88% (293,544) of Philadelphia's population age 5 and older spoke a mother language other than English.
Document 3: Energy and Environmental Security Initiative: Established in 2003, the Energy and Environmental Security Initiative (EESI) is an interdisciplinary Research & Policy Institute located at the University of Colorado Law School. The fundamental mission of EESI is to serve as an interdisciplinary research and policy center concerning the development and crafting of State policies, U.S. energy policies, and global responses to the world's energy crisis; and to facilitate the attainment of a global sustainable energy future through the innovative use of laws, policies and technology solutions. In pursuit of this mission, EESI's primary operational function is that of an enabling environment for teaching, research and policy analysis vis-à-vis the impact of laws and policies on the scientific, technological, sociopolitical, commercial, and environmental dimensions of sustainable energy.
Document 4: United Nations Environment Programme: The United Nations Environment Programme (UNEP), a programme of the United Nations, coordinates the organization's environmental activities and assists developing countries in implementing environmentally sound policies and practices. It was founded by Maurice Strong, its first director, as a result of the United Nations Conference on the Human Environment (Stockholm Conference) in June 1972 and has overall responsibility for environmental problems among United Nations agencies; however, international talks on specialized issues, such as addressing climate change or combating desertification, are overseen by other UN organizations, like the Bonn-based Secretariat of the United Nations Framework Convention on Climate Change and the United Nations Convention to Combat Desertification. UNEP's activities cover a wide range of issues regarding the atmosphere, marine and terrestrial ecosystems, environmental governance and green economy. It has played a significant role in developing international environmental conventions, promoting environmental science and information and illustrating the way those can be implemented in conjunction with policy, working on the development and implementation of policy with national governments, regional institutions in conjunction with environmental non-governmental organizations (NGOs). UNEP has also been active in funding and implementing environment related development projects.
Document 5: Languages of India: According to Census of India of 2001, India has 122 major languages and 1599 other languages. However, figures from other sources vary, primarily due to differences in definition of the terms ``language ''and`` dialect''. The 2001 Census recorded 30 languages which were spoken by more than a million native speakers and 122 which were spoken by more than 10,000 people. Two contact languages have played an important role in the history of India: Persian and English. Persian was the court language during the Mughal period in India. It reigned as an administrative language for several centuries until the era of British colonisation. English continues to be an important language in India. It is used in higher education and in some areas of the Indian government. Hindi, the most widely spoken language in a large region of India today, serves as the lingua franca across much of North and Central India. However, there have been anti-Hindi agitations in South India, most notably in the states of Tamil Nadu. There is also opposition in non-Hindi belt states towards imposition of Hindi in these areas.
Document 6: Languages of India: According to the Census of India of 2001, India has 122 major languages and 1599 other languages. However, figures from other sources vary, primarily due to differences in definition of the terms ``language ''and`` dialect''. The 2001 Census recorded 30 languages which were spoken by more than a million native speakers and 122 which were spoken by more than 10,000 people. Two contact languages have played an important role in the history of India: Persian and English. Persian was the court language during the Mughal period in India. It reigned as an administrative language for several centuries until the era of British colonisation. English continues to be an important language in India. It is used in higher education and in some areas of the Indian government. Hindi, the most commonly spoken language in India today, serves as the lingua franca across much of North and Central India. However, there have been anti-Hindi agitations in South India, most notably in the state of Tamil Nadu.
Document 7: New Delhi: New Delhi has a population of 249,998. Hindi and Punjabi are the most widely spoken languages in New Delhi and the lingua franca of the city. English is primarily used as the formal language by business and government institutes. New Delhi has a literacy rate of 89.38% according to 2011 census, which is highest in Delhi.
Document 8: Languages of India: First, second, and third languages by number of speakers in India (2001 Census) Language First language speakers First language speakers as a percentage of total population Second language speakers Third language speakers Total speakers Total speakers as a percentage of total population Hindi 422,048,642 41.03 98,207,180 31,160,696 551,416,518 53.60 English 226,449 0.02 86,125,221 38,993,066 125,344,736 12.18 Bengali 83,369,769 8.10 6,637,222 1,108,088 91,115,079 8.86 Telugu 74,002,856 7.19 9,723,626 1,266,019 84,992,501 8.26 Marathi 71,936,894 6.99 9,546,414 2,701,498 84,184,806 8.18 Tamil 60,793,814 5.91 4,992,253 956,335 66,742,402 6.49 Urdu 51,536,111 5.01 6,535,489 1,007,912 59,079,512 5.74 Kannada 37,924,011 3.69 11,455,287 1,396,428 50,775,726 4.94 Gujarati 46,091,617 4.48 3,476,355 703,989 50,271,961 4.89 Odia 33,017,446 3.21 3,272,151 319,525 36,609,122 3.56 Malayalam 33,066,392 3.21 499,188 195,885 33,761,465 3.28 Sanskrit 14,135 < 0.01 1,234,931 3,742,223 4,991,289 0.49
Document 9: Odisha: Odia is the official language along with English as center state communication. Odia is spoken as a native language by 82.7% of the population according to 2011 census. Other minority languages of the state are Hindi, Telugu, Santali, Kui, Urdu, Bengali and Ho.
Document 10: Centre for Science and Environment: Centre for Science and Environment (CSE) is a not-for-profit public interest research and advocacy organisation based in New Delhi, India. Established in 1980, CSE works as a think tank on environment-development issues in India, poor planning, climate shifts devastating India's Sundarbans and advocates for policy changes and better implementation of the already existing policies. CSE uses knowledge-based activism to create awareness about problems and propose sustainable solutions.
Document 11: La Casa de la Ciencia de Sevilla - Science Museum: Along with a museum, the building houses the Andalusian headquarters of the Spanish National Research Council (CSIC). CSIC is the largest public institution devoted to research in Spain, and the third largest in Europe. The building was opened to the public in 2008, with the goal of sharing knowledge acquired through scientific research. La Casa de la Ciencia aims to be a bridge between the scientific research community and the public, sharing contemporary scientific research and information on environmental issues.
Document 12: New Delhi: Although colloquially Delhi and New Delhi as names are used interchangeably to refer to the jurisdiction of NCT of Delhi, these are two distinct entities, and the latter is a small part of the former.
Document 13: North East Institute of Science and Technology, Jorhat: North East Institute of Science and Technology (NEIST), Jorhat (formerly Regional Research Laboratory) is a constituent establishment of the Council of Scientific and Industrial Research (CSIR), a premier R&D organisation of India, which has a chain of laboratories across the country. This laboratory was established in 1961 under the chemical science group of CSIR and originally its main aim was to develop indigenous technologies by utilising the immense natural resources of northeastern India like Petroleum, Natural Gas, Minerals, Tea, Aromatic and Medicinal plants.
Document 14: Canadian Environmental Law Association: The Canadian Environmental Law Association (CELA) is a non-profit, public interest organization established in 1970 to use existing laws to protect the environment and to advocate environmental law reforms. It is also a free legal advisory clinic for the public, and will act at hearings and in courts on behalf of citizens or citizens' groups who are otherwise unable to afford legal assistance. Funded by Legal Aid Ontario, CELA is one of 79 community legal clinics located across Ontario, 15 of which offer services in specialized areas of the law. CELA also undertakes additional educational and law reform projects funded by government and private foundations.
Document 15: Leave No Trace: These principles have been adapted to different activities, ecosystems and environments. Since 1994, Leave No Trace Center For Outdoor Ethics, a non-profit organization also known as Leave No Trace, exists to educate people about their recreational impact on nature as well as the principles of Leave No Trace to prevent and minimize such impacts.
ground_truth: 249,998
sub_queries: Centre for Science and Environment >> headquarters location Answer: New Delhi
What is the population of New Delhi ? Answer: 249,998