question: What are the most commonly used encodings of Unicode ?
answer: UTF-8 , UTF-16 and the now-obsolete UCS-2
turker_answer: The most commonly used encodings of Unicode are UTF-8 , UTF-16 , and the now-obsolete UCS-2 .
rule-based: The most commonly used encodings of Unicode are UTF-8 , UTF-16 and the now-obsolete UCS-2 .