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 we moeten wel harder werken . "
Example Output: None

Example Input: Ze willen hun aandelen geheel of gedeeltelijk verkopen .
Example Output: None

Example Input: Het koetswerk is dat beslist , het interieur helaas heel wat minder .
Example Output:
None