Passage: Neither Murray nor Bradley lived to see it. Murray died in 1915, having been responsible for words starting with A–D, H–K, O–P, and T, nearly half the finished dictionary; Bradley died in 1923, having completed E–G, L–M, S–Sh, St, and W–We. By then, two additional editors had been promoted from assistant work to independent work, continuing without much trouble. William Craigie started in 1901 and was responsible for N, Q–R, Si–Sq, U–V, and Wo–Wy. The OUP had previously thought London too far from Oxford but, after 1925, Craigie worked on the dictionary in Chicago, where he was a professor. The fourth editor was Charles Talbut Onions, who compiled the remaining ranges starting in 1914: Su–Sz, Wh–Wo, and X–Z.In 1919–1920, J. R. R. Tolkien was employed by the OED, researching etymologies of the Waggle to Warlock range; later he parodied the principal editors as "The Four Wise Clerks of Oxenford" in the story Farmer Giles of Ham.By early 1894, a total of 11 fascicles had been published, or about one per year: four for A–B, five for C, and two for E. Of these, eight were 352 pages long, while the last one in each group was shorter to end at the letter break (which eventually became a volume break). At this point, it was decided to publish the work in smaller and more frequent instalments; once every three months beginning in 1895 there would be a fascicle of 64 pages, priced at 2s 6d. If enough material was ready, 128 or even 192 pages would be published together. This pace was maintained until World War I forced reductions in staff. Each time enough consecutive pages were available, the same material was also published in the original larger fascicles. Also in 1895, the title Oxford English Dictionary was first used. It then appeared only on the outer covers of the fascicles; the original title was still the official one and was used everywhere else.

Question: How many people had received a promotion?
two