TASK DEFINITION: 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'.
PROBLEM: Zo konden ze beter in het oog worden gehouden .

SOLUTION: None

PROBLEM: " Ik ben eigenlijk op mijn pensioenleeftijd .

SOLUTION: None

PROBLEM: Amper twee jaar later is de olieprijs bijna verdrievoudigd tot ongeveer 30 dollar .

SOLUTION:
None