question: Where would the decision to change the definition of the kilogram have occured at the earliest ?
answer: the General Conference on Weights and Measures in 2011
turker_answer: The decision to change the definition of the kilogram would have occurred at the General Conference on Weights and Measures in 2011 at the earliest .
rule-based: The decision to change the definition of the kilogram would have occured at the earliest in the General Conference on Weights and Measures in 2011 .