1<?xml version="1.0" encoding="ISO-8859-1"?>
2<persons>
3    <person>
4        <full_name>Hege Refsnes</full_name>
5        <!-- Error: Expected at least 3 child_name -->
6        <child_name>Hege</child_name>
7        <child_name>Stale</child_name>
8    </person>
9</persons>
10