When 68-292-68-292 is the ignition timing how many graphicals is it?
CREATE TABLE "four_cylinder_engines" (
  "engine" text,
  "crankshaft" text,
  "ignition_timing" text,
  "graphical" text,
  "example" text
);
SELECT COUNT("graphical") FROM "four_cylinder_engines" WHERE "ignition_timing"='68-292-68-292';