About: http://webisa.webdatacommons.org/147807300

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	The post said there was a seminar where the guy said vinegar is not strong enough to test rocks but the ph down stuff is.
http://www.w3.org/ns/prov#wasQuotedFrom	tropicalfishkeeping.com