<?xml version="1.0" encoding="UTF-8"?>
<x xmlns="http://www.schemaTest.org/xinclude-test" xmlns:xi="http://www.w3.org/2003/XInclude" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.schemaTest.org/xinclude-test tests.xsd">
   <!-- tests that fallback must be child of include -->
   <!-- EXPECT FAILURE -->
   [Fatal Error] test18.xml:8:18: A 'fallback' element was found that did not have 'include' as the parent.