Two years ago , when North Korea was refusing to enter talks over its nuclear arms program , China closed '' for cleaning '' the lone oil pipeline to North Korea , which then agreed to attend talks in Beijing .
Beijing /location/administrative_division/country China
China /location/location/contains Beijing
China /location/country/capital Beijing
China /location/country/administrative_divisions Beijing
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Beijing
LOCATION
China
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/location/administrative_division/country
China
LOCATION
Beijing
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/location/location/contains
China
LOCATION
Beijing
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/location/country/capital
China
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Beijing
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/location/country/administrative_divisions