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

Example Input: Camenzind , Serpellini , Spruch , ik , ...
Example Output: Camenzind: B-PER, Serpellini: B-PER, Spruch: B-PER

Example Input: Tot in die zaak uitspraak is gedaan , moet de jongen in de Verenigde Staten blijven .
Example Output:
None