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: Casagrande ( Ita ) -- 4 .
Example Output: Casagrande: B-PER

Example Input: Zo'n opdracht moet uiteraard democratisch gecontroleerd worden .
Example Output: None

Example Input: Kristien Daelemans
Example Output:
Kristien: B-PER, Daelemans: I-PER