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'.

Ex Input:
Dat kan de general manager zijn tot en met de student .

Ex Output:
None


Ex Input:
Personages in ' Dansen op mijn graf ' in NTG missen ruggengraat

Ex Output:
None


Ex Input:
Durant en Aelvoet moeten naar regering met snelheidsbeperking

Ex Output:

Durant: B-PER, Aelvoet: B-PER