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: Zie ook pagina 6 , 1 jaar na de dioxinecrisis ( 5 )
Example Output: None

Example Input: De terugkeer van de gekwetste Patrick Ewing vond Van Gundy waardevol .
Example Output: Patrick: B-PER, Ewing: I-PER, Van: B-PER, Gundy: I-PER

Example Input: Zijn we echter niet het verkeerde pad aan het bewandelen ?
Example Output:
None