Write SQL query to solve given problem: How many different clerks have served the customer with the address uFTe2u518et8Q8UC?. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT COUNT(T1.o_clerk) FROM orders AS T1 INNER JOIN customer AS T2 ON T1.o_custkey = T2.c_custkey WHERE T2.c_address = 'uFTe2u518et8Q8UC'