question: How long ago was the decedent of 99 % of all modern potatoes cultivated as long ago as ?
answer: 10,000 years ago
turker_answer: The decedent of 99 % of all modern potatoes was cultivated as long ago as 10,000 years ago .
rule-based: The decedent of 99 % of all modern potatoes was cultivated as long ago as 10,000 years ago .