question: When did ducks begin to appear in the books of Western Europeon Society ?
answer: ducks did not appear in agricultural texts in Western Europe until about 810 AD
turker_answer: Ducks began to appear in the books of Western Europeon Society around 810 AD .
rule-based: Ducks began to appear in the books of Western Europeon Society in ducks did not appear in agricultural texts in Western Europe until about 810 AD .