<http://schema.org/about>
"Q: I was coloring my hair near the sink and, much to my dismay, the drain started to clog, and I couldn\u2019t wash the muddy brown water down the drain."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/your-home/at-home/questions/how-do-i-unclog-a-drain-without-using-regular-drain-cleaner>