The example you got was the exact thing I had in mind - there are "terminology-heavy" fields with lots of terms, and a random draw is quite likely to draw two i

The example you got was the exact thing I had in mind - there are "terminology-heavy" fields with lots of terms, and a random draw is quite likely to draw two items from a single field which IMHO should count as quite related. The automated scoring method they're using seems to say that all obscure words are unrelated to each other, though, but I'd use that as a criticism for that evaluation algorithm not as praise for the evaluated method. On the other hand, probably there are many humans who would pick two local animals or two office-related objects that happen to be in their room, so that cuts both ways.