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 "2-18228282-7" 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 "2-18228282-7" WHERE "Position" = 'C' AND "Player" = 'Yiannis Bourousis';