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_4767 ( "Name" text, "Pole Position" text, "Fastest Lap" text, "Winning driver" text, "Winning team" text, "Report" text )

### Question ###
Which driver won the Indianapolis 500 the year the Chaparral team also won it?

### Accurate SQL ###

SELECT "Winning driver" FROM table_4767 WHERE "Winning team" = 'chaparral' AND "Name" = 'indianapolis 500'