About: http://webisa.webdatacommons.org/332671434

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	Also, the external operation of the roller clamp overcomes the problem of valve blockage caused by clots and other particulate matter as frequently occurs with the conventional internal type stopcock used in this medical procedure.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es