The question is how and when should you question authority.
Your question is a good sentence using the word "common".
This is the answer to your question.
Your question is itself a sentence which uses the word "could".
I will contribute to your question by using the word in a sentence.
The answer to your question is yes.
I am determined not to answer your question.
Your question is a distraction to me.
I will answer your question, my word is my bond.
You just did stupid, a question is a sentence.
dude, you just made a sentence in the question...
"According to whom?" It's a question, but a sentence nonetheless.
I take the stance that your question is not actually a question