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: Zo zijn ze , dat is hun mysterie .
Example Output: None

Example Input: Sommige mensen denken dat ik gefrustreerd ben maar daar is niets van .
Example Output: None

Example Input: Zijn echtgenote is minister van Toerisme , Adi Koila Nailatikau Mara in de verkozen regering Chaudhry ( kandidaat nummer 4 ) , die gegijzeld wordt door Speight ( nummer 5 ) .
Example Output:
Adi: B-PER, Koila: I-PER, Nailatikau: I-PER, Mara: I-PER, Chaudhry: B-PER, Speight: B-PER

