<http://schema.org/headline>
"Evil Twins: Porsche 911 Carrera S vs. GT3 RS"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.roadandtrack.com/new-cars/car-comparison-tests/reviews/a20267/evil-twins-porsche-911-carrera-s-vs-gt3-rs/>