CREATE TABLE table_47125 ("Date" TEXT, "Location" TEXT, "Head coach" TEXT, "Opponent" TEXT, "Result" TEXT)

Who was the opponent when the head coach was B. Sathianathan?
SELECT "Opponent" FROM table_47125 WHERE "Head coach" = 'b. sathianathan'
SELECT "Opponent" FROM "table_47125" WHERE "Head coach" = 'b. sathianathan'