At Natanz , in central Iran , they found preparations for more than 50,000 whirling centrifuges meant to purify uranium .
Iran /location/location/contains Natanz
IN NNP , IN JJ NNP , PRP VBD NNS IN JJR IN CD JJ NNS VBN TO VB NN .
Iran
LOCATION
Natanz
LOCATION
/location/location/contains