How many total innings have an average under 6.33, strike rate under 71.43, balls faced over 36, and smaller than 19 runs scored?
CREATE TABLE "sri_lanka" (
  "name" text,
  "innings" real,
  "runs_scored" real,
  "balls_faced" real,
  "average" real,
  "s_r" real
);
SELECT SUM("innings") FROM "sri_lanka" WHERE "average"<6.33 AND "s_r"<71.43 AND "balls_faced">36 AND "runs_scored"<19;