About: http://webisa.webdatacommons.org/24447941

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	Sumach, elm wood, elder, chestnut, beech, willow, oak, plum, sycamore, cherry, poplar wood, catechu and manzanita are a few of the trees that produce enough tannins and gallic acid that can be used to advantage in ink making.
http://www.w3.org/ns/prov#wasQuotedFrom	typepad.com