About: http://webisa.webdatacommons.org/374975111

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	Fixed or mobile police were present in the schools, particularly during the hours when children were entering or leaving school buildings.
http://www.w3.org/ns/prov#wasQuotedFrom	state.gov