question: When did the IEC release its version of the common EPS standard as IEC 62684:2011 ?
answer: January 2011
turker_answer: The IEC released its version of the common EPS standard as IEC 62684:2011 in January 2011 .
rule-based: The IEC released its version of the common EPS standard as IEC 62684:2011 in January 2011 .