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'.

Ex Input:
VÃƒÆ’Ã‚Â­er op vijf . "

Ex Output:
None


Ex Input:
Grenstwist verdeelt Hoorn van Afrika

Ex Output:
None


Ex Input:
patrick martens

Ex Output:

patrick: B-PER, martens: I-PER