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: Garzelli ( Ita / Mercatone Uno ) de 173 km in 4u42:32 ( gem. : 36,739 km / u ) -- 2 .
Example Output: Garzelli: B-PER

Example Input: En ik had twijfels over mijn blessure , ik was een beetje mijn ritme kwijt .
Example Output: None

Example Input: Vanderpoorten doet Guimardstraat voorstel over vervangingspools
Example Output:
Vanderpoorten: B-PER