Use reasoning to lead to the answer of the following question:
Where could you find millions of brownstone?\nOptions:\n- ring\n- brooklyn\n- subdivision\n- new york city\n- apartment complex
 Reasoning process:
User
Brownstone is a type of building material. Brownstone apartments are found in New York City. Each brownstone apartment is built using a large number of brownstones. New York city is a city. Therefore, the final answer is new york city.
Assistant