<http://schema.org/headline>
"Oldest Spiral Galaxy: Star Cluster BX442, Spied By Hubble Telescope, Dates Back 10.7 Billion Years"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.huffingtonpost.com/2012/07/19/oldest-spiral-galaxy-bx442-nasa-hubble_n_1685627.html>