question: What breed of duck is considered the first ?
answer: mallard ( Anas platyrhynchos ) is the ancestor of all breeds of domestic duck ( with the exception of the Muscovy duck
turker_answer: Mallard ( Anas platyrhynchos ) is the ancestor of all breeds of domestic duck ( with the exception of the Muscovy duck .
rule-based: Mallard ( Anas platyrhynchos ) is the ancestor of all breeds of domestic duck ( with the exception of the Muscovy duck is considered the first .