About: http://webisa.webdatacommons.org/139779312

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	It is an unmistakable noise so you will know.As for changing the blade, well, this takes a few seconds and is a matter of pushing out the broken one and sliding in the new one, no tools required.
http://www.w3.org/ns/prov#wasQuotedFrom	dooyoo.co.uk