user: 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.  - Andrei Alexandrovich Suraikin (born October 20, 1948 in Leningrad;  about 1992) was a Russian pair skater. With partner Liudmila Smirnova, he was the 1972 Olympic silver medalist.  - Irina Konstantinovna Rodnina (born 12 September 1949) is a Russian politician and figure skater, who is the only pair skater to win 10 successive World Championships (196978) and three successive Olympic gold medals (1972, 1976, 1980). She was elected to the State Duma in the 2007 legislative election as a member of President Vladimir Putin's United Russia party. As a figure skater, she initially competed with Alexei Ulanov and later teamed up with Alexander Zaitsev. She is the first pair skater to win the Olympic title with two different partners, followed only by Artur Dmitriev.  - Lyudmila Stanislavovna Smirnova ( Russian :    ; born July 21 , 1949 in Leningrad ) is a retired pair skater who competed for the Soviet Union . With partner Andrei Suraikin , she is the 1972 Winter Olympic silver medalist . With later partner Alexei Ulanov , she is a two - time World silver medalist .  - 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.  - The Soviet Union, officially the Union of Soviet Socialist Republics (USSR " ) was a socialist state in Eurasia that existed from 1922 to 1991. A union of multiple subnational republics, its government and economy were highly centralized. The Soviet Union was a one-party federation, governed by the Communist Party with Moscow as its capital.  - Alexei Nikolaevich Ulanov (born 4 November 1947) is a retired pair skater who represented the Soviet Union. With Irina Rodnina, he is the 1972 Olympic champion and a four-time (19691972) world champion. With later partner Lyudmila Smirnova, he is a two-time world silver medalist.    Given the information above, choose from the list below the object entity that exhibits the relation 'date of birth' with the subject 'lyudmila smirnova'.  Choices: - 10  - 12  - 140  - 1922  - 1947  - 1948  - 1949  - 1972  - 1976  - 1991  - 2  - 20  - 4  - 4 november 1947  - 77
Answer: 4 november 1947

Question: Information:  - Tower defense is a subgenre of real - time strategy video games , where the goal is to stop the enemies from reaching a specific point on the map by building a variety of different towers which shoot at them as they pass . Enemies and towers usually have varied abilities , costs , and upgrade prices . When an enemy is defeated , the player earns money or points , which are used to buy or upgrade towers , or upgrade the number of money or points that are earned , or even upgrade the rate at which they upgrade . The choice and positioning of the personal towers is the essential strategy of the game . Many games , such as Flash Element Tower Defense feature enemies that run through a `` maze '' , which allows the player to strategically place towers for optimal effectiveness . However , some versions of the genre force the user to create the maze out of their own towers , such as Desktop Tower Defense . Some versions are a hybrid of these two types , with preset paths that can be modified to some extent by tower placement , or towers that can be modified by path placement .  - Real-time strategy (RTS) is a subgenre of strategy video games where the game does not progress incrementally in turns.  - Strategy video games are a video game genre that focuses on skillful thinking and planning to achieve victory. It emphasizes strategic, tactical, and sometimes logistical challenges. Many games also offer economic challenges and exploration. They are generally categorized into four sub-types, depending on whether the game is turn-based or real-time, and whether the game focuses on strategy or tactics.    Given the information above, choose from the list below the object entity that exhibits the relation 'instance of' with the subject 'tower defense'.  Choices: - four  - game  - planning  - strategy  - time  - video  - video game genre
Answer:

assistant: video game genre