What is the total number of Field Goal %, when Free Throw % is greater than 0.5, when Rebounds is 159, and when Points Per Game is less than 7.1?
CREATE TABLE "player_stats" (
  "player" text,
  "games_played" real,
  "minutes_played" real,
  "minutes_played_per_game" real,
  "rebounds" real,
  "rebounds_per_game" real,
  "assists" real,
  "assists_per_game" real,
  "field_goal_pct" real,
  "free_throw_pct" real,
  "points" real,
  "points_per_game" real
);
SELECT COUNT("field_goal_pct") FROM "player_stats" WHERE "free_throw_pct">0.5 AND "rebounds"=159 AND "points_per_game"<7.1;