CREATE TABLE table_203_189 (id DECIMAL, "year" DECIMAL, "competition" TEXT, "venue" TEXT, "position" TEXT, "notes" TEXT)

did they finish in a better position in portugal or greece ?
SELECT "venue" FROM table_203_189 WHERE "venue" IN ('portugal', 'greece') ORDER BY "position" LIMIT 1
SELECT "venue" FROM "table_203_189" WHERE "venue" IN ('portugal', 'greece') ORDER BY "position" NULLS FIRST LIMIT 1