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_51933 ( "Driver" text, "Constructor" text, "Laps" real, "Time/Retired" text, "Grid" real )

### Question ###
what is the grid when the laps is more than 0, the time/retired is engine and the driver is pedro de la rosa?

### Accurate SQL ###

SELECT "Grid" FROM table_51933 WHERE "Laps" > '0' AND "Time/Retired" = 'engine' AND "Driver" = 'pedro de la rosa'