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 math, we use the term series a lot, and there are many types of series. How should I craft my sentence when I have three different ones in mind to talk about? Should I settle down for a less mortal alternative of 'list of series' or something like that? The existing question on The possessive and plural forms of 'series' suggests the usage of series'. But is that all? If that's the only solution, then could you please explain the usage of apostrophe symbol at the end? Is that a plural marker or a possessive marker, or both?.

Ex Output:
Series (like deer, salmon, and sheep) is pronounced and spelled the same in the plural as in the singular. If either the singular or the plural is used as a possessive, an apostrophe is added to show that in print, though there is no pronunciation difference in speech. Thus, The series doesn't converge. (singular) The series don't converge. (plural) This series' limit is unknown. (singular possessive) These series' limits are unknown. (plural possessive) More examples can be seen here.


Ex Input:
Is there a single word in English to describe someone who is too worried about their health and even thinks they are sick, thus, taking frequent clinical tests or taking too much predictive medication,etc.

Ex Output:
The word is hypochondriac and they suffer from hypochondria. noun A person who is abnormally anxious about their health. [ODO] ODO also gives the explanation of using hypo- ('under') rather than hyper- ('over') which one might expect if someone is overly anxious about something: late Middle English: via late Latin from Greek hupokhondria, denoting the soft body area below the ribs, from hupo 'under' + khondros 'sternal cartilage'. Melancholy was originally thought to arise from the liver, gall bladder, spleen, etc..


Ex Input:
I'm trying to find different ways of saying that 'You don't have to be a rocket scientist', but I can't seem to get any good ideas. I got a variation, 'You don't have to be a brain surgeon...,' but are there any others ways. It doesn't have to follow the routine of 'You don't have to...'.

Ex Output:

Other related expressions are: You don't have to be a genius/it doesn't take a genius: 'You don't have to be a genius. You don't have to be superman. You don't even have to be a techie. Just have an idea.' All you need is a good imagination and you'll find fertile soil. And . . . the best ideas are right under your nose. Ron Gordon ... 'I know that it doesn't take a genius to work out that sleep is important for good health.' or, you don't have to be Einstein: They graduate! So, they end up going through life with this piece of paper that makes everybody think that they are smart, even if they are not. You don't have to be Einstein to have a place in college. He was not sure he really wanted to know, though one didn't have to be Einstein to put two and two together.!!


