Question: Pieter 'Piet' Klijnveld, was a Dutch accountant who started a practice that after several mergers would grow into which professional service company and one of the Big Four auditors, along with Deloitte, Ernst & Young (EY), and PricewaterhouseCoopers (PwC)?
{'answer': 'KPMG', 'supporting_facts': [['Piet Klijnveld', 0], ['KPMG', 0]]}