About: http://webisa.webdatacommons.org/196690930

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	A ball or other sealing device is then dropped down the tubing string and caught on a seat at the bottom of the tool, or in an extension of the tool or tubing string below the tool.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com