Definition: Given the Question and Answer pair, detect whether the answer is acceptable or not. Denote acceptable answer as "yes", otherwise denote as "no". An acceptable answer is consistent with the context in question, detailed, long, and uses general knowledge of English. Answers that are not definite and suggest a variety of options are not acceptable answers.
Input: Question: Possible Duplicate: Do you use "a" or "an" before acronyms? Does one use 'a' or 'an' before the word 'X-Ray'? Quite simply, should a sentence read "a XML report" or "an XML report"? 
Answer: It's "an XML report", because which form of the indefinite article to use is decided by how the next word is pronounced. In this case, it's pronounced: An ex-emm-ell report 'XML' begins with a vowel sound, 'e', so an is used rather than a.

yes