Converting 2x XML to one XSL

Question

XPath

There are two xml documents, you need to process them with one xsl file.
How can I refer to different elements in different xml documents?

Answer 1

www.w3schools.com/Xsl/func_document.asp

<xsl:value-of select="document('celsius.xml')/celsius/result[@value=$value]"/>

Answer 2

Thank you.
Too bad it's something else =(

Answer 3

In one of the xml, this is the code.
<?xml version="1.0" encoding="UTF-8"?>
<env:Envelope xmlns:env=" schemas.xmlsoap.org/soap/envelope/ ">
<env:Header/>
<env:Body>
OK
Pour off sample successfully finished
50394782517
50394782521
</env:Body>
</env:Envelope>
I can't get to it with XPath. Swears at {env}