What is the population within the city limits of the city where the company Sibur is headquartered ?
Sibur: SIBUR (PJSC SIBUR Holding) is a Russian gas processing and petrochemicals company headquartered in Moscow. Moscow: Moscow ( or ; Russian: Москва́ , "Moskva"; ] ) is the capital and most populous city of Russia, with 13.2 million residents within the city limits and 17.1 million within the urban area.
13.2 million