You will be given a definition of a task first, then some input of the task.
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.

Article: I stood up to speak and my mind went blank .Has this ever happened to you? You may be nervous in front of an audience .You may be worried that you didn't prepare enough, You may have forgotten some of your facts. What can you do? Sometimes people prepare too much and become terrified if they can't remember the words they have practised. It is a good idea to bring some notes to help you organize, but don't memorize your speech. If you "go blank",begin by explaining the purpose of your speech, and the test will probably follow.
Answer: not knowing what to say at the moment
Output:
"Go blank" here means _