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Annotating relationships in text
The previous two sections looked at the annotation of entities and signals. These relate to specific spans of text: mentions of the entity, and signals that modify the entities. A further type of annotation describes how these latter two relate to each other. Which signal modifies which entity? Which drug is for which condition? These annotations are slightly different, in that they are not directly attached to spans of text. Instead, they describe how two spans of text interrelate. The guidelines in this section describes how to add these relational annotations:
- Which relationships can be used to relate which entities and signals?
- When should annotations describing relationships be created?
- How should special cases be dealt with?
- What information should be recorded for a relation?
Summary
The relationships