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: vrijdag , 2 juni 2000
Example Output: None

Example Input: ' Hof veroordeelde politieke zeden van toen '
Example Output: None

Example Input: Het verdriet van Gyuri Vergouwen .
Example Output:
Gyuri: B-PER, Vergouwen: I-PER