CREATE TABLE "fiba_world_olympic_qualifying_tournament" (
  "player" text,
  "height" real,
  "position" text,
  "year_born_age" text,
  "current_club" text
);

Question: Count the average Height which has a Position of pf, and a Year born (Age) on april 1, 1981 (age32)?
SQL: SELECT AVG("height") FROM "fiba_world_olympic_qualifying_tournament" WHERE "position"='pf' AND "year_born_age"='april 1, 1981 (age32)';

Question: Which Height has a Position of c, and a Player of yiannis bourousis?
SQL: SELECT SUM("height") FROM "fiba_world_olympic_qualifying_tournament" WHERE "position"='c' AND "player"='yiannis bourousis';