Table: grand_prix_1973_2
Columns: driver
constructor
laps
time_retired
grid

Question: What is the top grid that laps less than 66 and a retried engine?
SQL: SELECT MAX("grid") FROM grand_prix_1973_2 WHERE "time_retired" = 'engine' AND "laps" < 66

Question: What is the top lap that had a tyre time?
SQL: SELECT MAX("laps") FROM grand_prix_1973_2 WHERE "time_retired" = 'tyre'

Question: What is the top grid that roger williamson lapped less than 7?
SQL: SELECT MAX("grid") FROM grand_prix_1973_2 WHERE "driver" = 'roger williamson' AND "laps" < 7