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:
De fout werd echter al daarvoor opgemerkt .

Ex Output:
None


Ex Input:
J. Groosman ,

Ex Output:
J.: B-PER, Groosman: I-PER


Ex Input:
Simoni ( Ita ) -- 3 .

Ex Output:

Simoni: B-PER