Question: Which American multinational oil field service company has been testified against in Congress by Bunny Greenhouse in 2005?
Sentence (from "Bunny Greenhouse"): She described one of the Halliburton contracts (secret, no-bid contracts awarded to Kellogg, Brown and Root (KBR)—a subsidiary of Halliburton) as "the most blatant and improper contract abuse I have witnessed during the course of my professional career".
Relevant evidence: No