CREATE TABLE "engines" (
  "model" text,
  "engine" text,
  "displacement" text,
  "valvetrain" text,
  "fuel_system" text,
  "max_power_at_rpm" text,
  "max_torque_at_rpm" text
);

Question: What is the maximum torque that has 2,445 CC Displacement, and an Iveco 8144.61 engine?
SQL: SELECT "max_torque_at_rpm" FROM "engines" WHERE "displacement"='2,445 cc' AND "engine"='iveco 8144.61';

Question: What Valvetrain has a fuel system made up of petrol engines?
SQL: SELECT "valvetrain" FROM "engines" WHERE "fuel_system"='petrol engines';