| http://www.w3.org/ns/prov#value | - Gun laws also were strengthened in Canada after the 1989 slaying of 14 female engineering students in Montreal by a woman-hating gunman, and in Germany after a 19-year-old expelled student killed 16 people, including 12 teachers, in Erfurt in 2002. (AP Photo/Jens Meyer, File)
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