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_65 ( year INTEGER, world_rank VARCHAR, result VARCHAR )

### Question ###
What's the lowest Year with a World Rank of 5th, with a Result greater than 20.31?

### Accurate SQL ###

SELECT MIN(year) FROM table_name_65 WHERE world_rank = "5th" AND result > 20.31