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: " Ik heb er altijd angstvallig over gewaakt dat ÃƒÆ’Ã‚Â¡lle belangrijke beslissingen gebeurden met instemming van alle overheden .
Example Output: None

Example Input: Aanleiding daarvoor is de verkoop van 38 Hannaford-winkels ( zie pagina 17 ) .
Example Output: None

Example Input: Krijgen we er te veel ?
Example Output:
None