question: What area is PDO
answer: Cheddar cheese -- some of which has the West Country Farmhouse Cheddar Protected Designation of Origin ( PDO ) .
turker_answer: PDO is an area of cheddar cheese -- some of which has the West Country Farmhouse Cheddar Protected Designation of Origin ( PDO ) .
rule-based: PDO is cheddar cheese -- some of which has the West Country Farmhouse Cheddar Protected Designation of Origin ( PDO )