Soap Webservice XML parsing in IOS

I am new to the SOAP XML web service. I initiating soap request and getting response as below

<?xml version="1.0" encoding="ISO-8859-1"?>
<SOAP-ENV:Envelope SOAP-ENV:encodingStyle="http://ift.tt/wEYywg" xmlns:SOAP-ENV="http://ift.tt/sVJIaE" xmlns:xsd="http://ift.tt/tphNwY" xmlns:xsi="http://ift.tt/ra1lAU" xmlns:SOAP-ENC="http://ift.tt/wEYywg"><SOAP-ENV:Body><ns1:createemailResponse xmlns:ns1="urn:hellowsdl"><return xsi:type="xsd:string”>{“data”:[{“email”:”ex@yahoo.com”,”pid”:”32502”}]}</return></ns1:createemailResponse></SOAP-ENV:Body>

In this i want to retreive response string from createemailResponse as {“data”:[{“email”:”ex@yahoo.com”,”pid”:”32502”}]}. Please help me...