About: http://webisa.webdatacommons.org/169054922

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	Hi Zhebin,In this case, you want your two subsystems to be always connected, and the socket connection is dedicated to each other.Your solution is the best one - leaving the socket always open.
http://www.w3.org/ns/prov#wasQuotedFrom	theserverside.com