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: Profiel
Example Output: None

Example Input: Kristien Daelemans
Example Output: Kristien: B-PER, Daelemans: I-PER

Example Input: " Maar pas op , een tenniswedstrijd is nooit gedaan .
Example Output:
None