question: What feature of the Birmingham Quran fragments ' text make some doubt that it is older than other known versions of the Quran ?
answer: dots and chapter separators
turker_answer: The Birmingham Quran fragments ' text contain dots and chapter separators casting some doubt as to whether it is older than other known versions of the Quran .
rule-based: Dots and chapter separators make some doubt that it is older than other known versions of the Quran .