Write a question where all X number of responses are homogenous to win $X USD

You are tasked with writing one question.

The question will be randomly given to humans on this world, translated into a medium they understand.

If the answerer is unable to comprehend the question, they are skipped.

You can choose however many number of people to distribute the question to, from 1 to 7 billion.

If all the response are the same, you will win that number of dollars.

"Same" is judged with intention. 'One' and '1' and 'Uno'' is judged the same as long as this is the intention of the answerer.

They are given no incentive for answering honestly or dishonestly, but they will all give a response.

You are free to ask a fact, such as "what's 1+1?", but there could always be troll responses such as '3'.

What question would you ask? And how many people would you choose to distribute to?