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: " Vorig jaar werd die in Brussel op 27 dagen overschreden .
Example Output: None

Example Input: Het voorstel was naar verluidt vrij spontaan gegroeid binnen de door burgemeester Norbert De Batselier ( SP ) geleide meerderheid .
Example Output: Norbert: B-PER, De: I-PER, Batselier: I-PER

Example Input: " Het Jerry Springer-gehalte in Big Brother is immers zeer hoog .
Example Output:
None