Media Reviewswe made, and the rules we devised for making sense of the context, would have to be clear enough for the search system to 'learn' and apply. Yet that decision would still need to reflect the term's changing and indeterminate use in a way that would satisfy historian users of the search system. These tricky and problematic decisions have been built into our system, and we are of course anxious that our users be aware that, thanks to such decisions and to the complexity of the overall task, they need to be critical as they approach the results our system gives. In fact, the system facilitates critical engagement by the ease and speed of making alternative and cross-checking interrogations.As we trial our 'beta-version' with our Advisory Group, we are excited by the possibilities that this system, and that TM and indeed digital humanities tools as a whole, open up. First, our system speeds up searches dramatically, and allows more focused searches than would be possible even with fairly sophisticated Boolean searching. By searching for Condition: 'tuberculosis', for example, the user gets results where the system has recognised the term as referring to tuberculosis as a condition, rather than finding every instance of the word 'tuberculosis' in the text (in phrases like 'National Tuberculosis Association', or 'tuberculosis nurse'). But semantic searching is about much more than convenience. The user can find all instances of a particular entity category: one can, for example, locate all articles published in 1892 where a Biological Entity (including nonhuman animals and microorganisms) is mentioned, and find the frequency with which each Biological Entity is mentioned. Combining entity searches and relationship searches enables the user to find instances where one entity is said to cause another: by asking what Condition entities are said to cause the entity Sign or Symptom: 'swelling' in the entity Anatomical: 'feet', the user can find case reports and reviews that discuss which ailments were understood to cause the feet to swell. (By contrast, consider the overwhelming flood of results the searcher would get by searching for the terms 'feet' and 'swelling'.) This capacity is particularly useful for those who want to investigate relatively common, everyday phenomena that would stymie the best intentions of researchers because they are difficult to find in text, too numerous to manage easily, or easily overlooked by the all-too human researchers. We thus expect this tool not only to speed up searching and make it more precise, but also to help us see things that would otherwise be too difficult to see or too easy to miss, or that we might not even have known we were looking for. It will never provide easy and obvious answers to big questions, and it requires that the user know something about how it works. Nevertheless, we hope that as a tool that can facilitate exploration and new ways of encountering existing resources, it will be valuable both as a resource in its own right, and as a means of introd...