About: http://webisa.webdatacommons.org/40356540

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	For the formula method, a formula describing the structure of the plot, which should be of the form ~ x | g1 * g2 * ..., where x is a data frame or matrix.
http://www.w3.org/ns/prov#wasQuotedFrom	inside-r.org