<http://schema.org/headline>
"How To: Convert a PowerPoint Presentation from 4:3 ratio to 16:9 without distorted or stretched images"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.hanselman.com/blog/HowToConvertAPowerPointPresentationFrom43RatioTo169WithoutDistortedOrStretchedImages.aspx>