About: http://webisa.webdatacommons.org/330413994

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	Much of the strong chemical elements of the soil have long since been leached away leaving a humus type soil, composed of leaves, twigs and other vegetable matter, known as organic matter, which usually has an acid content of about pH 5.
http://www.w3.org/ns/prov#wasQuotedFrom	vt.edu