<http://schema.org/contactType>
"customer service"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.boomerangbooks.com.au/Plays-Poems-and-Miscellaneous-Writings-Associated-with-George-Villiers-Second-Duke-of-Buckingham/Robert-D-Hume/book_9780199203642.htm>