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_82 ( nationality VARCHAR, athlete VARCHAR, time VARCHAR )

### Question ###
What's the nationality of Henry Carr having a time of 20.3y?

### Accurate SQL ###

SELECT nationality FROM table_name_82 WHERE athlete = "henry carr" AND time = "20.3y"