SQL Server 2012 :: Querying XML From SSMS?

I have an xml document that (for this example) I've simplified to look like this:

<xml xmlns:s='uuid:BDC6E3F0-6DA3-11d1-A2A3-00AA00C14882'
xmlns:dt='uuid:C2F41010-65B3-11d1-A29F-00AA00C14882'
xmlns:rs='urn:schemas-microsoft-com:rowset'
xmlns:z='#RowsetSchema'>
<s:Schema id='RowsetSchema'>

[code]....

When I try querying the xml document in SQL, I get nothing back, unless I remove the schema information. I'm using this:

declare @x xml
select @x = P
from openrowset (bulk 'E:VehicleOption0514.xml', single_blob) as Products(P)
declare @hdoc int
exec sp_xml_preparedocument @hdoc output, @x

[Code] ....