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)?
Sentence (from "PricewaterhouseCoopers"): It is the second largest professional services firm in the world, and is one of the Big Four auditors, along with Deloitte, EY and KPMG.
Relevant evidence: No