About: http://webisa.webdatacommons.org/190054085

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	Because the cover material is flexible, without additional support the cover may tend to sag toward the center, especially under the weight of such materials as rain or snow.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com