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_10 ( rank INTEGER, athlete VARCHAR, time VARCHAR )

### Question ###
What is the sum of rank for the athlete kerron stewart, and a time smaller than 11.05?

### Accurate SQL ###

SELECT SUM(rank) FROM table_name_10 WHERE athlete = "kerron stewart" AND time < 11.05