question: What are the names of a few regional Alaskan airlines ?
answer: Ravn Alaska , PenAir , and Frontier Flying Service
turker_answer: The names of a few regional Alaskan airlines are Ravn Alaska , PenAir , and Frontier Flying Service .
rule-based: The names of a few regional Alaskan airlines are Ravn Alaska , PenAir , and Frontier Flying Service .