<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<http://schema.org/SearchAction>
<https://www.zen-cart.com/showthread.php?207238-(28)-connect()-timed-out-https-api-3t-paypal-com-nvp-is-not-responding&s=11a61fe43c88d8423bbaae4b647f6871&p=1196844>