CREATE TABLE "greece" (
  "name" text,
  "pos" text,
  "height" text,
  "weight" text,
  "date_of_birth" text,
  "club" text
);

Question: What is the weight of the player from club panionios g.c. and was born on 1975-05-21?
SQL: SELECT "weight" FROM "greece" WHERE "club"='panionios g.c.' AND "date_of_birth"='1975-05-21';