Question: Curtis Allina added heads to the design while he was executive of a company of what nationality?
Sentence (from "Curtis Allina"): Curtis Allina (August 15, 1922 – December 15, 2009) is credited with the addition of heads on the dispensers for PEZ candy, a design feature implemented while he was an executive at Pez-Haas, then the name of the company that now makes Pez candy.
Relevant evidence: Yes