<http://schema.org/headline>
"What to book: Niki de Saint Phalle at OTCA"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.harpersbazaar.co.uk/culture/bazaar-art/news/a37365/what-to-book-niki-de-saint-phalle-otca-omer-tiroche-contemporary-art/>