entity framework linq include and grouping

I'm trying to to do include and group in in one sentence ``` var instanceIdList = context. Tracks. Include("Services"). GroupBy(x => x.ServiceId). Take(top); ``` but when I check the result at debug I cant see any of the include values I tried to do in another way ``` var objectContext = ((IObjectContextAdapter)context).ObjectContext; var set = objectContext.CreateObjectSet<Track>(); var instanceIdList = set.Include("Services").GroupBy(x => x.ServiceId); ``` this is the classes : Track ``` public partial class Track { public long Id { get; set; } public System.Guid ServiceId { get; set; } public Nullable<System.Guid> ServiceInterfaceId { get; set; } public Nullable<System.Guid> ProviderId { get; set; } public System.Guid ServiceInstanceId { get; set; } public System.Guid ActivityParentId { get; set; } public System.Guid ActivityInstanceId { get; set; } public int ActivityType { get; set; } public int ServiceRole { get; set; } public int TrackOrder { get; set; } public System.DateTime Datetime { get; set; } public Nullable<System.Guid> MessageId { get; set; } public int Status { get; set; } public Nullable<int> ESBErrorCode { get; set; } public Nullable<int> ESBTecnicalErrorCode { get; set; } public string ErrorDescription { get; set; } public string PortName { get; set; } public string MachineName { get; set; } public string ConsumerId { get; set; } public string ExternalId { get; set; } public string ConsumerMachineName { get; set; } public int ServiceBehavior { get; set; } public virtual Message Message { get; set; } } ``` Service ``` public partial class Service { public Service() { this.Providers = new HashSet<Provider>(); this.ServiceInterfaces = new HashSet<ServiceInterface>(); } public System.Guid ServiceId { get; set; } public string ServiceName { get; set; } public string ServiceNumber { get; set; } public Nullable<System.Guid> ModelSchemaId { get; set; } public virtual ICollection<Provider> Providers { get; set; } public virtual ICollection<ServiceInterface> ServiceInterfaces { get; set; } } ``` but the result is the same thanks miki