How to use stored procedure in Linq-to-Entities

I am working with Entity Framework

I want to know how I can use stored procedures in Linq-to-Entities. My stored procedure is called SelectEmployee and table name is Employee

For this I added code like this

 databaseentity entities = new databaseentity();
 var selectdata = entities.ExecuteStoreQuery<Employee>("SelectEmployee").ToList();

but it is not supported ExecuteStoreQuery

So please guide me how can I use stored procedures in Linq-to-Entities