<https://coderwall.com/p/ykpxkg/columns-for-serialized-attributes-in-rails-models-need-to-be-type-text>
<http://schema.org/dateModified>
"2016-02-25 18:50:14 UTC"^^<http://schema.org/Date>
<https://coderwall.com/p/ykpxkg/columns-for-serialized-attributes-in-rails-models-need-to-be-type-text>