user: Given the question: Information:  - Russia (from the  Rus'), also officially known as the Russian Federation, is a country in Eurasia. At , Russia is the largest country in the world by surface area, covering more than one-eighth of the Earth's inhabited land area, and the ninth most populous, with over 140 million people at the end of March 2016. The European western part of the country is much more populated and urbanised than the eastern, about 77% of the population live in European Russia. Russia's capital Moscow is one of the largest cities in the world, other major urban centers include Saint Petersburg, Novosibirsk, Yekaterinburg, Nizhny Novgorod and Samara.  - A diplomatic mission is a group of people from one state or an international inter-governmental organisation (such as the United Nations) present in another state to represent the sending state/organisation officially in the receiving state. In practice, a diplomatic mission usually denotes the resident mission, namely the office of a country's diplomatic representatives in the capital city of another country. As well as being a diplomatic mission to the country in which it is situated, it may also be a non-resident permanent mission to one or more other countries. There are thus resident and non-resident embassies.  - An urban area is a human settlement with high population density and infrastructure of built environment. Urban areas are created through urbanization and are categorized by urban morphology as cities, towns, conurbations or suburbs. In urbanism, the term contrasts to rural areas such as villages and hamlets and in urban sociology or urban anthropology it contrasts with natural environment. The creation of early predecessors of urban areas during the urban revolution led to the creation of human civilization with modern urban planning, which along with other human activities such as exploitation of natural resources leads to human impact on the environment.  - The Embassy of the United States of America in Moscow is the diplomatic mission of the United States of America in the Russian Federation. The embassy complex is located in the Presnensky District in the city center of Moscow. Its address is: "Bolshoy Deviatinsky Pereulok No. 8". The US citizen center is located nearby at "21 Novinskiy Bulvar". Organization. The embassy consists of the following sections:<ref name="moscow.usembassy.gov/offices">moscow.usembassy.gov/offices. Retrieved 2008-10-08</ref>  - The American Center in Moscow is a cultural center located at the Embassy of the United States , Moscow , Russia . It was founded in 1993 by the U.S. Embassy to the Russian Federation . The American Center serves as a focal point of American culture in Russia 's capital and offers a variety of cultural and educational programs as well as access to print and online resources about the United States .  - Presnensky District, commonly called Presnya, is a district of Central Administrative Okrug of the federal city of Moscow, Russia. Population:   - Moscow (or ) is the capital and most populous city of Russia, with 12.2 million residents within the city limits and 16.8 million within the urban area. Moscow has the status of a Russian federal city.    What entity does 'american center in moscow' has the relation 'instance of' with?
The answer is:

assistant: organization