Table: race_results_109
Columns: year
entrant
chassis
engine
points

Question: When is the latest year that an entrant has toro rosso str1 chassis and under 1 point?
SQL: SELECT MAX("year") FROM race_results_109 WHERE "chassis" = 'toro rosso str1' AND "points" < 1

Question: How many entrants have a mercedes fo 108w 2.4l v8 engine and over 0 points?
SQL: SELECT COUNT("year") FROM race_results_109 WHERE "engine" = 'mercedes fo 108w 2.4l v8' AND "points" > 0

Question: What is the engine for the car with 3 points?
SQL: SELECT "engine" FROM race_results_109 WHERE "points" = 3