About: http://webisa.webdatacommons.org/27666449

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Other obstacles that narrow clearances include handrails, banisters, newel posts, stair winders, electrical fixtures including switches, interior steps, stairwell openings, baseboard radiators, and other interior fixtures.
http://www.w3.org/ns/prov#wasQuotedFrom	finewoodworking.com