Answer the following question, with explanation first.
Where could you find millions of brownstone?\nOptions:\n- ring\n- brooklyn\n- subdivision\n- new york city\n- apartment complex

new york city
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.

.

So, the answer is new york city