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: Daardoor is het Flex-project eigenlijk ook een wetenschappelijk onderzoek over hoe mensen eigenlijk leren .

Output: None


Input: Consider Input: Kofferinhoud min / max ( l ) : 515 / 2.927

Output: None


Input: Consider Input: Failliet ?


Output: None