CREATE TABLE table_13019 ("Player" CLOB, "Height" FLOAT, "Position" CLOB, "Year born  ( Age ) " CLOB, "Current Club" CLOB)

Which Height has a Position of c, and a Player of yiannis bourousis?
SELECT SUM("Height") FROM table_13019 WHERE "Position" = 'c' AND "Player" = 'yiannis bourousis'
SELECT SUM("Height") FROM "table_13019" WHERE "Player" = 'yiannis bourousis' AND "Position" = 'c'