Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_52219 ( "Year" text, "Builder" text, "Motors" text, "Trailers" text, "Control Trailers" text )

### Question ###
I want the control trailers for 1931 with builder of grcw

### Accurate SQL ###

SELECT "Control Trailers" FROM table_52219 WHERE "Year" = '1931' AND "Builder" = 'grcw'