Dynamic Query from two predicates.

   I have got a following query:

Expression<Func<Contact, bool>> c2 = (col => col.CompanyContacts.AsQueryable().Any(p => p.Company.CompanyName.Contains("some_name")));

ITypedEntityQuery query = EntityQuery<Contact>.Create(typeof(Contact), Manager).Cast<Contact>().Where(c2).OrderBySelector(selector).Skip(skip).Take(take);

That works perfectly fine. Unfortunatelly when I try to split the first expression into two like this:

var exp1 = (Expression<Func<CompanyContact, bool>>)(p => p.Company.CompanyName.Contains("some_name"));
Expression<Func<Contact, bool>> c2 = (col => col.CompanyContacts.AsQueryable().Any(exp1));

I got a nasty serialization error:

Type 'System.Linq.Expressions.Expression`1[System.Func`2[DomainModel.CompanyContact,System.Boolean]]' cannot be serialized. Consider marking it with the DataContractAttribute attribute, and marking all of its members you want serialized with the DataMemberAttribute attribute.  If the type is a collection, consider marking it with the CollectionDataContractAttribute.  See the Microsoft .NET Framework documentation for other supported types.

The point of splitting the query is simple - I want to generate the inner part from IPredicateDescription.

Thanks in advance.