This document extends ISO 24617-7:2020, which specifies ways of annotating spatial information in natural language such as English, by establishing a formal semantics for its abstract syntax. The task of the proposed semantics is of two kinds:

a)       translation of annotation structures to semantic forms;

b)       model-theoretic interpretation of semantic forms.

Semantic forms are represented in a type-theoretic first-order logic. These semantic forms are then interpreted with respect to a model for part of the world to which an annotated language is referentially, or denotationally, anchored.

NOTE            The basic framework and content of this document is based on Reference [1].