About: http://webisa.webdatacommons.org/178296296

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 income tax as a regular and important source of revenue, for example, was a hotly contested issue until the 16th amendment was adopted in 1913.
http://www.w3.org/ns/prov#wasQuotedFrom	realtruth.org