How many 4wi were recorded by the player with an economy of 4.17?
CREATE TABLE "bowling_averages" (
  "player" text,
  "matches" real,
  "overs" text,
  "wickets" real,
  "average" text,
  "economy" text,
  "bbi" text,
  "4wi" real
);
SELECT "4wi" FROM "bowling_averages" WHERE "economy"='4.17';