Figure 3.

(a) A possible user interface for specifying a conjunction of disjunctive queries. Clicking on the “More” button refreshes the screen and creates a new set of OR subqueries. The button allows the creation of a new comparison ERGO Annotation as shown in Figure 3 (b) or a new noun phrase ERGO Annotation as shown in Figure 3 (c).

Figure 3 (c). A possible user-interface for specifying a noun phrase such as “Tuberculosis of intrathoracic lymph nodes, confirmed histologically,” initially consisting of a primitive noun and its adjectival modifiers. By clicking on the “More” button, a user can specify additional modifier attributes and noun phrases. Tool support can easily facilitate the task of searching terminological references such as primitive nouns and adjectival modifiers.