question: What are the three levels of road classification in Eritrea ?
answer: primary ( P ) , secondary ( S ) , and tertiary ( T )
turker_answer: The three levels of road classification in Eritrea are primary ( P ) , secondary ( S ) , and tertiary ( T ) .
rule-based: The three levels of road classification in Eritrea are primary ( P ) , secondary ( S ) , and tertiary ( T ) .