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_name_15 (builder VARCHAR, number VARCHAR, date VARCHAR, length VARCHAR)

### Question ###
Which Builder has a Date smaller than 1913, and a Length of feet (m), and a Number of 15?

### Accurate SQL ###

SELECT builder FROM table_name_15 WHERE date < 1913 AND length = "feet (m)" AND number = "15"