question: According to the American Journal of Human Genetics , what percentage of modern Iberian population has Sephardic Jewish ancestry ?
answer: 19.8 %
turker_answer: According to the American Journal of Human Genetics , 19.8 % of the modern Iberian population have Sephardic Jewish ancestry .
rule-based: According to the American Journal of Human Genetics , 19.8 % has Sephardic Jewish ancestry .