question: Why are there more poor people in the United States and Europe than China?
sentence: Oxfam's claims have however been questioned on the basis of the methodology used: by using net wealth (adding up assets and subtracting debts), the Oxfam report, for instance, finds that there are more poor people in the United States and Western Europe than in China (due to a greater tendency to take on debts).[unreliable source?][unreliable source?]