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:
" Waar ik ook stond of wat ik ook deed , de ballen floten me om de oren " , ondervond de Waal .

Ex Output:
None


Ex Input:
" Freenet is een bijna-perfecte anarchie " , aldus Clarke .

Ex Output:
Clarke: B-PER


Ex Input:
Export was enkel mogelijk na certifiÃƒÆ’Ã‚Â«ring van veilige bedrijven .

Ex Output:

None