Based on the given question and tppic, give an answer. The answer is available on on the internet. The questions are mostly centered around a single named entity.

concept: Gregor Mendel  question:  who was mendel and what did he develop?
['Scientist']

concept: China  question:  who are the main trading partners of china?
['Madagascar', 'Angola', 'Algeria', 'Sudan', 'Tuvalu', 'Tanzania', 'Nepal', 'Djibouti', 'Laos', 'Sierra Leone']

concept: Roman Empire  question:  where was the roman empire centered?

Rome