What terrible thing did the killing of Jean Charles de Menezes , a Brazilian electrician , by the London police prevent ?
Jean Charles de Menezes /people/deceased_person/place_of_death London
WDT JJ NN VBD DT NN IN NNP NNP IN NNP , DT JJ NN , IN DT NNP NN VB .
Jean Charles de Menezes
PERSON
London
LOCATION
/people/deceased_person/place_of_death