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: Roesems 2:06 -- 9 .
Example Output: Roesems: B-PER

Example Input: Ik zal spelen zoals ik kan , en dan zien we wel .
Example Output: None

Example Input: Rod Stewart aan schildklier geopereerd
Example Output:
Rod: B-PER, Stewart: I-PER