CREATE TABLE table_name_46 (location VARCHAR(255), date_of_demolition VARCHAR(255), church_name VARCHAR(255))
What is the location that has a date of demolition of 1940 and has a church named Christ Church Greyfriars?
    
SQL: SELECT location FROM table_name_46 WHERE date_of_demolition = 1940 AND church_name = "christ church greyfriars"