ODM2 Annotation Type Controlled Vocabulary ODM2 Working Group A vocabulary for describing the type of annotation. In ODM2 the annotation type determines whether the annotation forms a grouping of related entities (e.g., a group of sites or variables) or an annotation of a particular entity (e.g., a comment about an individual Site or data value). Specimen group A group of specimens such as an analysis batch, profile, experiment, etc. Group