About: http://webisa.webdatacommons.org/372298034

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	Commercial heating, ventilation and air conditioning (HVAC) units, such as aptly named ???rooftop units,??? are often assembled onto the flat roofs of structures such as supermarkets, office buildings and other commercial structures.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com