What was the chassis when the points were greater than 0 and the entrant was March Engineering?
CREATE TABLE "complete_formula_one_world_championship_" (
  "year" real,
  "entrant" text,
  "chassis" text,
  "engine" text,
  "points" real
);
SELECT "chassis" FROM "complete_formula_one_world_championship_" WHERE "points">0 AND "entrant"='march engineering';