Entity Framework 6 - include derived type child property

My schema includes:

• LoanApplication (parent object)
• Borrowers (child object that as derived type BusinessBorrowerIndividual)
• BorrowersOwnerManagers (many-to-many, I have to explicitly define it because it has custom audit properties)
• OwnerManager (part of many-to-many relationship with Borrowers)
• OwnerManagerIndividual (derived type from OwnerManager)
• OwnerManagerBusiness (derived type from OwnerManager)
• OwnerManagerIndividualsRaceTypes (many-to-many, I have to explicitly define it because it has custom audit properties)
• RaceType (part of many-to-many relationship with OwnerManagerIndividual)

I tried using the following in my repository for LoanApplication:

public ILoanApplication GetById(int id)
{
    ILoanApplication item;


    using (var db = new MainContext())
    {
        item = db.LoanApplications
            .Include(c => c.Borrowers)
            .Include(c => c.Borrowers.Select(b => b.BusinessBorrowerIndividual))
            .Include(c => c.Borrowers.Select(b => b.BorrowersOwnerManagers))
            .Include(c => c.Borrowers.Select(b => b.BorrowersOwnerManagers.Select(bb => bb.OwnerManager)))
            .Include(c => c.Borrowers.Select(b => b.BorrowersOwnerManagers.Select(bb => bb.OwnerManager)
                                                                                            .OfType<OwnerManagerIndividual>()
                                                                                            .Select(o => o.OwnerManagerIndividualsRaceTypes)))
            .FirstOrDefault(l => l.Id == id);
    }

    return item;
}

Everything works except for the last include. I receive the following error when I use it:

The Include path expression must refer to a navigation property defined on the type. Use dotted paths for reference navigation properties and the Select operator for collection navigation properties. Parameter name: path

How do I update so that I can include the OwnerManagerIndividualsRaceTypes properties for the OwnerManager objects that are of OwnerManagerIndividual type? I also want to include all OwnerManger objects, regardless of if they are OwnerManagerIndividual or OwnerManagerBusiness.

** Update ** Based on the responses, it appears it can't easily be done in a single call. I going with the suggestion to make a secondary call to populate, which isn't as elegant solution:

public ILoanApplication GetById(int id)
{
    var ownerManagerIndividualRepository = new OwnerManagerIndividualRepository(UserOrProcessName);
    ILoanApplication item;


    using (var db = new MainContext())
    {
        item = db.LoanApplications
            .Include(c => c.Borrowers)
            .Include(c => c.Borrowers.Select(b=> b.BusinessBorrowerIndividual))
            .Include(c => c.Borrowers.Select(b => b.BorrowersOwnerManagers))
            .Include(c => c.Borrowers.Select(b => b.BorrowersOwnerManagers.Select(bb => bb.OwnerManager)))
            .FirstOrDefault(l => l.Id == id);
    }

    if (item?.Borrowers?.Count > 0 &&
        item.Borrowers.FirstOrDefault().BorrowersOwnerManagers.Any(o => o.OwnerManager.IsIndividual))
    {
        foreach (var owners in item.Borrowers.FirstOrDefault().BorrowersOwnerManagers.Where(o => o.OwnerManager.IsIndividual))
        {
            var owner = ownerManagerIndividualRepository.GetById(owners.OwnerManager.Id.Value);

            foreach (var type in owner.OwnerManagerIndividualsRaceTypes)
            {
                ((OwnerManagerIndividual)owners.OwnerManager).OwnerManagerIndividualsRaceTypes.Add((OwnerManagerIndividualsRaceTypes)type);
            }
        }
    }


    return item;
}