Generate the answer for a given question. The question requires common knowledge of English. Make sure that the answer is in detail, long, consistent with the context, and requires general knowledge of English. To be less repetitive, please vary your language for each question. Give a proper explanation to answer, and if necessary, provide the definition of various terms. And conclude your answer if it's long. If you have used other resources (e.g., Merriam Webster's.) to answer the question, include citations in your answer. You don't need to paraphrase the context of your resources, but make sure that your answer is consistent and complete.

Ex Input:
In conversation sometimes I'll say something like this: What's that do? which uses 's' as a contraction for 'does'. Is this a 'real' contraction, or is it incorrect usage of a contraction?.

Ex Output:
According to Merriam-Webster and Dictionary.com, 'what's' is short for: 'what is' (What's the matter?) 'what has' (What's happened to the car?) 'what does' (What's that mean?) So it appears that 'What's that do?' is grammatically correct. Merriam-Webster: what's Dictionary.com: what's


Ex Input:
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.

Ex Output:
Could it be described as an elegant solution or an engineering marvel?


Ex Input:
Please tell the single word for 'to completely root out a disease'.

Ex Output:

Eradicate. Etymology is from Eradicare. Eradicare, in turn, can be traced back to the Latin word radix, meaning 'root' or 'radish.' Although eradicate began life as a word for literal uprooting, by the mid-17th century it had developed a metaphorical application to removing things. Eradication is the reduction of an infectious disease's prevalence in the global host population to zero.