About: http://webisa.webdatacommons.org/126606532

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	You want to keep a hole open on the surface of your pond as this allows for the toxic gases to escape from decomposing leaves or other organic material and allows for oxygen exchange.
http://www.w3.org/ns/prov#wasQuotedFrom	thepondguy.com