Write SQL query to solve given problem: Provide the allergen of the Dominican patient named Dirk Languish.. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT T1.DESCRIPTION FROM allergies AS T1 INNER JOIN patients AS T2 ON T1.PATIENT = T2.patient WHERE T2.first = 'Dirk' AND T2.last = 'Langosh' AND T2.ethnicity = 'dominican'