public class myClass{
    public int Id {get;set;}
    public object SomeProperty {get;set;}
    public List<string> ListOfStrings {get;set;}
}

public class SomeEntity
{
    public int SomeEntityID {get;set;}
    public string Message {get;set;}
    public MyClassID {get;set;}
}

public class MyClass
{
    public int MyClassID {get;set;}
    public object SomeProperty {get;set;}
    public List<SomeEntity> ListOfSomeEntity {get;set;}
}

var myClass = context.MyClass.Include(c=>c.ListOfSomeEntity)
              .Single(c=>c.MyClassID == 1);