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:
Cornet d'Elzius is op dit ogenblik kabinetsadviseur van staatssecretaris voor Buitenlandse Handel Pierre Chevalier ( VLD ) .

Ex Output:
Cornet: B-PER, d'Elzius: I-PER, Pierre: B-PER, Chevalier: I-PER


Ex Input:
Agfa Gevaert stopt met de eigen productie van gelatine .

Ex Output:
None


Ex Input:
Die ZDF-reportage ZDF 22.15

Ex Output:

None