Definition: In this task, you're given an article and an answer. Your task is to generate the fill-in-the-blank question for this answer based on the given article. The blanks are always at the end of the question, and can be filled with more than one word or phrase.
Input: Article: There is one thing that everyone wants more than anything else .Some people try to get it by making money .They think that when they have enough money to buy such things as houses ,arms ,and cars ,they will have the one thing that everyone wants . Other people believe that if they know enough, they will find this thing .They study all their lives in search of it .Still others think that if they have power, they will find this thing .They keep telling themselves: When I am a boss, I will no longer have to search for this thing. What is it that everyone wants more than anything else? What is it that all of us keep working and searching for each day? It is happiness. Happiness is a strange thing .It does not mean the same to all men .What will make one man happy may not make another man happy .Some men say that happiness comes from helping others ,other men say that happiness comes from making life more pleasant for everyone .What do you mean when you say"That makes me happy." Read what different people have said about happiness .Perhaps you will learn something that will bring you peace of mind ,comfort ,money or may bring you what you search for happiness. 
 Answer: happiness is the thing that everyone wants to get

The main idea of this passage is that  _