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: " Wij hebben er slechts 6 uit 27 pogingen gelukt en dat legt erg veel uit .
Example Output: None

Example Input: Zekerheid is er echter nog steeds niet .
Example Output: None

Example Input: Ook twaalf miljoen Mexicaanse kinderen mogen zondag hun stem uitbrengen .
Example Output:
None