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: " Freenet is een bijna-perfecte anarchie " , aldus Clarke .
Example Output: Clarke: B-PER

Example Input: Het is onaanvaardbaar dat de overheid met die kennis niet of nauwelijks wil ingrijpen .
Example Output: None

Example Input: Dinsdag .
Example Output:
None