<?xml version="1.0" encoding="UTF-8"?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
{% for url in urls %}
<url>
<loc>{{ url[0] }}</loc>{% if url[1] %}
<lastmod>{{ url[1] }}</lastmod>{% endif %}
</url>
{% endfor %}
</urlset>