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: Een synthese van al deze elementen moet de lucht doen opklaren bij Mobistar .

Output: None


Input: Consider Input: Eerst VTM-cafÃƒÆ’Ã‚Â© geopend in OostendeBij de Wellington-renbaan ...

Output: None


Input: Consider Input: Hoger onderwijs


Output: None