About: http://webisa.webdatacommons.org/30382024

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	If your problem mostly occurs when it rains, I wonder if you have an improperly sloped vent arm somewhere, trapping water, and thus not allowing the vents to work properly.Greg : Thanks for your help.
http://www.w3.org/ns/prov#wasQuotedFrom	terrylove.com