Senior police officers have said recently that hundreds of potential terrorists are in Britain , and some antiterror specialists have said they fear an attack before the British election , as happened in Madrid last March 11 , three days before Spain 's vote . ''
Spain /location/country/capital Madrid
Spain /location/location/contains Madrid
JJ NN NNS VBP VBN RB IN NNS IN JJ NNS VBP IN NNP , CC DT JJ NNS VBP VBN PRP VBP DT NN IN DT JJ NN , IN VBN IN NNP JJ NNP CD , CD NNS IN NNP POS NN . ''
Spain
LOCATION
Madrid
LOCATION
/location/country/capital
Spain
LOCATION
Madrid
LOCATION
/location/location/contains