Table: f2_results
Columns: year
entrant
chassis
engine
points

Question: Which engine has a Chassis of lotus 44 f2?
SQL: SELECT "engine" FROM f2_results WHERE "chassis" = 'lotus 44 f2'

Question: What entrant appeared in 1969?
SQL: SELECT "entrant" FROM f2_results WHERE "year" = 1969

Question: Which engine has a Year larger than 1969?
SQL: SELECT "engine" FROM f2_results WHERE "year" > 1969

Question: What is the largest year with an Entrant of ron harris / team lotus?
SQL: SELECT MAX("year") FROM f2_results WHERE "entrant" = 'ron harris / team lotus'