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: Consider Input: Question: I overheard my manager asking "What are you up to?" What does that idiom mean? Is it an informal/negative way of asking?? 
Answer: "What are you up to?" means "What have you been doing lately?". If you add an adverb to the end of the phrase, for instance, "What are you up to tonight?" or "What are you up to this summer?" it can be interpreted as "What are you planning to do tonight?" or "What are you planning to do this summer?".

Output: yes


Input: Consider Input: Question: The word year when pronounced starts with a phonetic sound of e which is a vowel sound making it eligible for being preceded by an. Yet, we tend to write a year. Why? 
Answer: For the word 'year' to be preceded by 'an' it must sound like it's beginning with a vowel. The reason why it is a tad tricky is because of the difference in the way people pronounce it. Some people pronounce the word 'year' as 'ear' with 'y' silent, thereby wanting 'an' to precede and feeling discomfort with 'a'. e.g. 'It's been an _ear since we talked'. Whereas others pronounce it with a 'ye' sound in the beginning. In this case one finds that using 'a' suddenly sounds more comfortable. e.g. 'It's been a 'ye'ar since we talked'.

Output: no


Input: Consider Input: Question: Is there a word to describe an object that excels in form and function? I am trying to avoid very general words like great, superb or excellent. 
Answer: Could it be described as an elegant solution or an engineering marvel?.


Output: yes