About: http://webisa.webdatacommons.org/76878706

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	Two of them were United States Secret Service men, who were on the lookout and whose duty it was to guard against just such a calamity as had here befallen the President and the Nation.
http://www.w3.org/ns/prov#wasQuotedFrom	freerepublic.com