In this task, you will be presented with a question in Dutch language, and you have to write the person names from the question if present. B denotes the first item of a phrase and an I any non-initial word. Phrase used for the person name - PER. There can be instances with no person name entity, then return 'None'.
One example: De belle van het bal is Hillary
Solution is here: Hillary: B-PER, Clinton: I-PER
Explanation: In the given sentence, Hillary is identified as the person name, which is correct.

Now, solve this: Tot in 1997 bekleedde hij een topfunctie bij Ernst & Young , daarvoor ook een tijdlang bij Coopers & Lybrand .
Solution:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
None