About: http://webisa.webdatacommons.org/369018097

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	7.1 Memorial of Legalizing opium (June 10, 1836)- This document is a request from a Qing court official, Xu Naiji, to the Emperor for the legalization of opium.
http://www.w3.org/ns/prov#wasQuotedFrom	bu.edu