Could someone interpret what this question is asking me to do?

Question

I am answering a question using the Yelp dataset. For those of you who don't know what Yelp is, it connects people to local businesses and helps people find these businesses, allowing users to post reviews and rate businesses.
Now, below, is the question I have that I need to answer, but I don't understand what the question is asking, so could someone interpret it for me? Thanks.
The question:

KillingTime · Answer

What are the top-10 reviewers, in terms of the absolute number of reviews marked as useful by other users, of Nightlife businesses in Urbana-Champaign?

This is saying that from the Yelp dataset, you need to select those reviews of the "Nightlife businesses" (presumably a category of review types) in Urbana-Champaign (a location in the set).
From that subset, you need to select the reviews that have been "marked as useful" and group these to get a count for each reviewer.
Finally, sort the reviewers by that count and get the top 10 (i.e., the 10 with the highest count).

Could someone interpret what this question is asking me to do?

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