About: http://webisa.webdatacommons.org/120861346

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	In order to allow cooling of the surface being cut with the laser, especially hard tissue such as dental enamel and dentine and bone, a coolant, such as water, or air and water, is introduced to the spot where the laser beam is focused.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com