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'.
Q: Eric Ericson , Paul Hillier , Robin Gritton en Kaspars Putnins dirigeren koorproducties .
A: 
Eric: B-PER, Ericson: I-PER, Paul: B-PER, Hillier: I-PER, Robin: B-PER, Gritton: I-PER, Kaspars: B-PER, Putnins: I-PER