Table: grand_prix_1975_2
Columns: driver
constructor
laps
time_retired
grid

Question: What number of laps were done by driver Ronnie Peterson?
SQL: SELECT "laps" FROM grand_prix_1975_2 WHERE "driver" = 'ronnie peterson'

Question: Which driver had a time/retired of fuel system?
SQL: SELECT "driver" FROM grand_prix_1975_2 WHERE "time_retired" = 'fuel system'