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'.

Input: Consider Input: Boek : ' De Strafschop , Zoektocht naar de ultieme penalty ' , 144 blz. ( Bestellen ?

Output: None


Input: Consider Input: Na een paar schoten was de gijzeling afgelopen .

Output: None


Input: Consider Input: Ook dit toestel zal nog rond de 1.000 dollar kosten .


Output: None