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: Het gerecht viel in 1997 wel de gebouwen van OKC binnen .

Output: None


Input: Consider Input: " Die nodigen we ook op straat uit " , besluit Vandamme .

Output: Vandamme: B-PER


Input: Consider Input: ( SD )


Output: SD: B-PER