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: De zeven Brusselse gemeenten kunnen rekenen op een bedrag tussen 10 en 100 miljoen frank .
Example Output: None

Example Input: Petersen ( Den ) -- 6 .
Example Output: Petersen: B-PER

Example Input: Beikirch ( Dui ) -- 3 .
Example Output:
Beikirch: B-PER

