<https://blog.shareyourphotos.com/2017/01/11/the-easiest-way-to-share-photos-with-everyone-at-your-event/#primaryimage>
<http://schema.org/height>
"400"^^<http://www.w3.org/2001/XMLSchema#integer>
<https://blog.shareyourphotos.com/2017/01/11/the-easiest-way-to-share-photos-with-everyone-at-your-event/>