<http://schema.org/url>
<http://www.mnn.com/earth-matters/animals/photos/river-otters-hardest-working-clowns-in-the-water/you-otter-know>
<http://www.mnn.com/earth-matters/animals/photos/river-otters-hardest-working-clowns-in-the-water/the-human-threat>