The comments by Mr. Hanning , a former head of the federal intelligence service , underscore why this case is viewed as the gravest terrorist threat in Germany since 2001 , when militant Islamic students living in Hamburg laid the plan to hijack commercial airliners in the United States .
Hamburg /location/administrative_division/country Germany
Germany /location/location/contains Hamburg
Germany /location/country/administrative_divisions Hamburg
DT NNS IN NNP NNP , DT JJ NN IN DT JJ NN NN , VBP WRB DT NN VBZ VBN IN DT JJS JJ NN IN NNP IN CD , WRB JJ JJ NNS VBG IN NNP VBD DT NN TO VB JJ NNS IN DT NNP NNPS .
Hamburg
LOCATION
Germany
LOCATION
/location/administrative_division/country
Germany
LOCATION
Hamburg
LOCATION
/location/location/contains
Germany
LOCATION
Hamburg
LOCATION
/location/country/administrative_divisions