Question: What is the population of the Indian city where the National Physical Laboratory is located?

full_context: Document 1: National Physical Laboratory of India: The National Physical Laboratory of India, situated in New Delhi, is the measurement standards laboratory of India. It maintains standards of SI units in India and calibrates the national standards of weights and measures.
Document 2: New Delhi: New Delhi is home to Indira Gandhi Memorial Museum, National Gallery of Modern Art, National Museum of Natural History, National Rail Museum, National Handicrafts and Handlooms Museum, National Philatelic Museum, Nehru Planetarium, Shankar's International Dolls Museum. and Supreme Court of India Museum.
Document 3: New Delhi: The city is home to numerous international organisations. The Asian and Pacific Centre for Transfer of Technology of the UNESCAP servicing the Asia-Pacific region is headquartered in New Delhi. New Delhi is home to most UN regional offices in India namely the UNDP, UNODC, UNESCO, UNICEF, WFP, UNV, UNCTAD, FAO, UNFPA, WHO, World Bank, ILO, IMF, UNIFEM, IFC and UNAIDS.
Document 4: Delhi: Delhi Union territory and Megacity National Capital Territory of Delhi From top clockwise: Lotus temple, Humayun's Tomb, Connaught Place, Akshardham temple and India Gate Location of Delhi in India Coordinates: 28 ° 36 ′ 36 ''N 77 ° 13 ′ 48'' E ﻿ / ﻿ 28.61000 ° N 77.23000 ° E ﻿ / 28.61000; 77.23000 Coordinates: 28 ° 36 ′ 36 ''N 77 ° 13 ′ 48'' E ﻿ / ﻿ 28.61000 ° N 77.23000 ° E ﻿ / 28.61000; 77.23000 Country India Settled 6th century B.C. Incorporated 1857 Capital formation 1911 Formation of Union Territory 1956 Formation of NCT 1 February 1992 Capital New Delhi Districts 11 Government Body Government of Delhi Lt. Governor Anil Baijal, IAS Chief Minister Arvind Kejriwal (AAP) Deputy Chief Minister Manish Sisodia Chief Secretary Anshu Prakash, IAS Commissioner of Police Amulya Patnaik, IPS Area Union territory 1,484.0 km (573.0 sq mi) Water 18 km (6.9 sq mi) Area rank 31st Elevation 200 -- 250 m (650 -- 820 ft) Population (2011) Union territory 16,787,941 Density 11,312 / km (29,298 / sq mi) Urban 16,349,831 (2nd) Megacity 11,034,555 (2nd) Metro (2016) 26,454,000 (1st) Demonym (s) Delhiite Languages Official Hindi English Additional official Punjabi Urdu GDP Nominal (NCT) ₹6.86 lakh crore (US $100 billion) (2017 - 18) Nominal per capita ₹329,093 (US $4,800) (2017 - 18) Metro GDP / PPP $167 -- 370 billion Time zone IST (UTC + 5.30) Pincode (s) 1100XX Area code (s) + 91 11 ISO 3166 code IN - DL Website delhi.gov.in
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: 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 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: New Delhi: New Delhi (i/ˌnjuː ˈdɛli/) is a municipality and district in Delhi which serves as the capital and seat of government of India. In addition, it also serves as the seat of Government of Delhi.
Document 9: 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 10: 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 11: National Institute of Science Communication and Information Resources: The National Institute of Science Communication and Information Resources (NISCAIR), located at New Delhi, India, is an information science institute in India founded in 2002. It operates under the umbrella of the Council of Scientific and Industrial Research (CSIR) that comprise 38 other labs and institutes in India.
Document 12: 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 13: 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 14: New Delhi: The national capital of India, New Delhi is jointly administered by both the Central Government of India and the local Government of Delhi, it is also the capital of the National Capital Territory (NCT) of Delhi.
Document 15: 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
ground_truth: 249,998
sub_queries: where is the national physical laboratory located in india Answer: in New Delhi
What is the population of in New Delhi ? Answer: 249,998