question: Prior to 1997 , where were racial categories declared for the U.S. Census ?
answer: OMB directive no. 15
turker_answer: Prior to 1997 , racial categories were declared for the US Census in OMB directive no. 15 .
rule-based: Prior to 1997 , racial categories were declared for the U.S. Census in OMB directive no. 15 .