Detailed Instructions: 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'.
See one example below:
Problem: De belle van het bal is Hillary
Solution: Hillary: B-PER, Clinton: I-PER
Explanation: In the given sentence, Hillary is identified as the person name, which is correct.

Problem: Ceustermans : " Per keer dat de zogeheten Europese gezondheidsnorm van 120 microgram ozon per kubieke meter in Brussel wordt overschreden gedurende minstens acht uur , vragen we een schadevergoeding van 50 miljoen Belgische frank .
Solution:
Ceustermans: B-PER