About: http://webisa.webdatacommons.org/398117822

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	Volcanic ash is made of crushed or powdery rocks, crystals from different types of minerals, and glass fragments that are extremely small like dust.
http://www.w3.org/ns/prov#wasQuotedFrom	howtosurvivea.com