premise: Oasis was a literary anthology published in Cairo during World War II. It was edited by Denis Saunders, David Burk, and Victor Selwyn. The introduction was written by General Henry Maitland Wilson, who was at this time Commander-in-Chief of the Middle East.
hypothesis: Oasis had two people whose names started with the letter D who had worked on editing it.
reason: Denis Saunders and David Burk were among those who edited Oasis, so yes, there were two people whose names started with the letter D who edited this work.