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:
Bestellen is gemakkelijk : gewoon een klik op de muis .

Ex Output:
None


Ex Input:
Ik had in heel die periode heel veel te danken aan mijn man .

Ex Output:
None


Ex Input:
Lengte / breedte / hoogte ( mm ) : 2.740 / 1.560 / 1.265

Ex Output:

None