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'.

Example Input: Maar ondanks die mindere nachtrust blijft de schooldag even lang duren en is hij net zo veeleisend .
Example Output: None

Example Input: De hele buurt rond de crÃƒÆ’Ã‚Â¨che is hermetisch afgesloten .
Example Output: None

Example Input: Deze operatie zorgde voor 57.000 nieuwe klanten .
Example Output:
None