The centrifuges could help the group , the Vienna-based International Atomic Energy Agency , determine whether the traces of highly enriched , weapons grade uranium found on nuclear equipment in Iran originated in Iran or , as Tehran maintains , arrived in a contaminated shipment of centrifuges from Pakistan .
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Iran /location/location/contains Tehran
Iran /location/location/contains Tehran
Iran /location/country/capital Tehran
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Tehran
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Iran
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Tehran
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Iran
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Tehran
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Iran
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Tehran
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