Read xml file from xslt

input and out xml and condition in xslt

need out put for below example
case 1
<trades>
<trade id="GOGLE" type="AUS">
<trade id="YAHOO" type="USA">
<trade id="YAHOO" type="USA">
</trades>

Show me
<trade id="YAHOO" type="USA">


case 2
<trades>
<trade id="GOGLE" type="AUS">
<trade id="YAHOO" type="CANADA">
<trade id="YAHOO" type="USA">
</trades>

Show me
<trade id="YAHOO" type="USA">

case 2
<trades>
<trade id="GOGLE" type="AUS">
<trade id="YAHOO" type="CANADA">
</trades>

Show me
<trade id="YAHOO" type="CANADA">