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: McRae ( VSt ) 1:47 -- 14 .
Example Output: McRae: B-PER

Example Input: Ik bezoek eenmaal in de week de sauna .
Example Output: None

Example Input: Professor Yap was een internationaal gereputeerd en zeer goed onderzoeker .
Example Output:
Yap: B-PER