<http://schema.org/alternativeHeadline>
"So you think tolls are a modern invention? Actually, they go back at least to the 7th century B.C., when travelers on the Babylon road in what is now Iraq were forced to pay the piper."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/green-tech/transportation/blogs/taking-a-toll-a-short-history-of-highway-robbery>