About: http://webisa.webdatacommons.org/101063385

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 average diameter of secondary grains is 5 ??m or less, for example 0.1 to 5 ??m, preferably 1 ??m or less.
http://www.w3.org/ns/prov#wasQuotedFrom	google.co.uk