Which section of the TOGAF document contains a structured metamodel for architectural artifacts?

Part II outlines the Architecture Development Method (ADM), which is a process for developing enterprise architecture, not a metamodel for architectural content.

Part III provides guidelines and techniques that support the ADM, rather than detailing a structured metamodel for architectural artifacts.

Part IV of TOGAF, the Architecture Content Framework, explicitly describes a structured metamodel for architectural artifacts. This metamodel defines the content framework that ensures consistency and completeness in the architectural outputs, including deliverables, artifacts, and building blocks.

Part VI contains TOGAF Reference Models like the Technical Reference Model, which are examples of architectures themselves, not a metamodel for architectural artifacts.

Part VII focuses on the Architecture Capability Framework, which addresses the organization, processes, and skills for an architecture function, not a metamodel for artifacts.