About: http://webisa.webdatacommons.org/448225664

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	E. coli O157:H7 first appeared in hamburger meat in the early 1980s and migrated to certain kinds of produce, mainly lettuce and other leafy greens that are cut, mixed and bagged for the convenience of supermarket shoppers.
http://www.w3.org/ns/prov#wasQuotedFrom	familysecuritymatters.org