British antiterrorist police discovered that the bombing of London 's Canary Wharf district used Semtex B , and it was enough for then to conclude the I.R.A. was behind the bombing .
London /location/location/contains Canary Wharf
JJ JJ NN VBD IN DT NN IN NNP POS NNP NNP NN VBD NN NN , CC PRP VBD RB IN RB TO VB DT NNP VBD IN DT NN .
London
LOCATION
Canary Wharf
LOCATION
/location/location/contains