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: Vanaf 21 uur gaf de VTM Big Band een concert tot omstreeks middernacht .
Example Output: None

Example Input: VÃƒÆ’Ã‚Â­er op vijf . "
Example Output: None

Example Input: Dat was vermaak .
Example Output:
None