Table: italian_grand_prix_1957
Columns: driver
constructor
laps
time_retired
grid

Question: What was the Vanwall time/retired with 49 laps?
SQL: SELECT "time_retired" FROM italian_grand_prix_1957 WHERE "laps" = 49 AND "constructor" = 'vanwall'

Question: How many laps did the grid 1 engine have?
SQL: SELECT SUM("laps") FROM italian_grand_prix_1957 WHERE "time_retired" = 'engine' AND "grid" = 1

Question: What was the highest lap for Luigi Piotti with more than 13 grid and a time/retired engine?
SQL: SELECT MAX("laps") FROM italian_grand_prix_1957 WHERE "grid" > 13 AND "time_retired" = 'engine' AND "driver" = 'luigi piotti'