<?xml version="1.0" encoding="UTF-8"?>
<superheroe xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xsi:noNamespaceSchemaLocation="xml-xsd-13-elemento-contenido-texto-y-atributos.xsd"
nombre="Hulk" edad="86">Buen superheroe</superheroe>