Write SQL query to solve given problem: List the name of married employees with less than 20 vacation hours.. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT T1.FirstName, T1.LastName FROM Person AS T1 INNER JOIN Employee AS T2 ON T1.BusinessEntityID = T2.BusinessEntityID WHERE T2.MaritalStatus = 'M' AND T2.VacationHours < 20