Table: formula_one_1953_2
Columns: entrant
constructor
chassis
engine
tyre
driver
rounds

Question: How many rounds did Ken Wharton go?
SQL: SELECT "rounds" FROM formula_one_1953_2 WHERE "driver" = 'ken wharton'

Question: What driver has a 166 c 500 chassis?
SQL: SELECT "driver" FROM formula_one_1953_2 WHERE "chassis" = '166 c 500'