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In a briefing at the NRC 's Rockville , Md. , headquarters and in a letter to Sam Rousso , acting of civilian radioactive waste management for the Energy Department , Bernero said study of seismic and volcanic risks needed to be given high priority.
 NRC, Rockville; NRC, Md.; Rockville, Md.
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; word3, word4". 
Option: Organization based in, Located in, Live in, Work for, Kill 
Text: {0} 
Answer:
 NRC, Rockville; NRC, Md.; Rockville, Md.