<http://schema.org/keywords>
" Birthday Cakes,car,race-car,6th birthday,boy-birthday,red,black,yellow "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.cakecentral.com/gallery/i/2914450/i-made-this-race-car-cake-for-my-nephew-6th-birthday>