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:
Aan de opkomst , de bijval en de bispartij te merken , kan Madredeus nog jarenlang haar zelfbetreden paden blijven bewandelen .

Ex Output:
None


Ex Input:
PCB-besmetting in Feluy via pletinstallatie voor graan

Ex Output:
None


Ex Input:
Journalisten die de trainingen volgden , hebben me dat verteld .

Ex Output:

None