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_99 (grid INTEGER, laps VARCHAR, time_retired VARCHAR)

### Question ###
Which grid has less than 11 laps, and a Time/Retired of accident?

### Accurate SQL ###

SELECT AVG(grid) FROM table_name_99 WHERE laps < 11 AND time_retired = "accident"