Referential semantics and scoping of mentions by entity type.

Notes on annotation:
1Where there is elision of the head, e.g. [IA/H5 virus], then annotate the whole expression. Otherwise annotate each expression separately, e.g. [IA virus] and [H5 virus].
2Markable expressions include specific people, e.g. [Jane] as well as definite noun phrases such as, the [24-year-old man].
3Quantitive modifers are included, e.g. [both kidneys] as well as spatial modifiers, e.g. [left collar bone].
4When modifiers are considered to be part of the disease name they are included, e.g. [highly pathogenic avian influenza], [end-stage renal disease].
5We exclude however finite verb forms, infinite verb forms with to', verbs in a progressive or perfect aspect, verb phrases, clauses or sentences and any phrase with a relative clause or complement clause.
6If the negation appears in a noun phrase with an anatomical entity then we generally allow it, e.g. [absent ankle reflexes], [no left kidney].
7Qualitative modifiers are included. For example, physical components: [black hair], underspecified ranges: [normal height], locational modifers: [low set ears], and level modifiers: [quite small fingers].