Wrong xapth is coming for the following response

<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<soap:Body>
<AddResponse xmlns="http://tempuri.org/">
<AddResult>3</AddResult>
</AddResponse>
</soap:Body>
</soap:Envelope>

Please suggest , how to fetch the AddResult node from above.