Write SQL query to solve given problem: Which region does "Supplier#000000129" belong to?. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT T3.r_name FROM nation AS T1 INNER JOIN supplier AS T2 ON T1.n_nationkey = T2.s_nationkey INNER JOIN region AS T3 ON T1.n_regionkey = T3.r_regionkey WHERE T2.s_name = 'Supplier#000000129'