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'.

Input: Consider Input: Bank Degroof waardeert wel op tot " opbouwen " .

Output: None


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

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


Input: Consider Input: Voor zo iemand heb ik bijzonder veel sympathie . "


Output: None