generate questions: Between Second and Third Avenues, 21st Street is alternatively known as Police Officer Anthony Sanchez Way. Along the northern perimeter of Gramercy Park, between Gramercy Park East and Gramercy Park West, 21st Street is known as Gramercy Park North.
Which Street is also known as Police Officer Anthony Sanchez Way? {sep_token} What is 21st Street known as along the northern perimeter of Gramercy Park? {sep_token} Between what avenues is 21st Street known by Police Officer Anthony Sanchez Way? {sep_token} Which police officer does a section of 21st Street refer to? {sep_token}