<http://schema.org/about>
"Houses and buildings are much like our bodies; parts age at different rates and need to be serviced or replaced if we are going to get the maximum life out of them. Philip Proefrock at Green Options notes"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/modular-design/open-building.html>