Before starting annotation, you need to define the semantic types that you will use for this purpose. Semantic types in CLAMP-Cancer refer to entities(e.g, ‘problem/treatment/test’) and the relations between them.
The created element will be added to the Entity node (See the picture below)
Then, you need to decide which entities are involved in this relation. There are two roles of arguments an entity can hold in a relation: From, and To. "From" refers to an independent entity while "To" indicates the dependent entity.