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_21 ( elevator VARCHAR, elector VARCHAR )

### Question ###
Who was the Elevator of Giacomo Colonna?

### Accurate SQL ###

SELECT elevator FROM table_name_21 WHERE elector = "giacomo colonna"