It should be noted that the direct evidence method as employed here is slightly different from Shaw and Hatzivassiloglou's: we simply compare raw token counts and take the larger value, while they applied a significance test to estimate the probability that a difference between counts arose strictly by chance.
i am indebted to Carol Bleyle, John Carroll, Ann Copestake, Guido Minnen, Miles Osborne, audiences at the University of Groningen and the University of Sussex, and three anonymous reviewers for their comments and suggestions.