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: ZINGEVING Hildegard van Hove schrijft doctoraal over Vlaamse alternatieve zingevingsmarkt
Example Output: Hildegard: B-PER, van: I-PER, Hove: I-PER

Example Input: " Ik ben eigenlijk op mijn pensioenleeftijd .
Example Output: None

Example Input: Petersen ( Den ) -- 6 .
Example Output:
Petersen: B-PER