CREATE TABLE table_31847 ("Pick #" FLOAT, "MLS Team" TEXT, "Player" TEXT, "Position" TEXT, "Affiliation" TEXT)

What position did the MLS team metrostars pick?
SELECT "Position" FROM table_31847 WHERE "MLS Team" = 'metrostars'
SELECT "Position" FROM "table_31847" WHERE "MLS Team" = 'metrostars'