The content of an artwork is a complex topic, being shaped by diverse interpretations over time and influenced by various cultural, temporal, and individual factors. Content, or meaning, is not a tangible part of the artwork, but something intelligible ascribed to its expression or represented object. Interpretation of the content varies among artists, critics, historians, and viewers, depending on their cultural and semantic fields. Furthermore, the context, deeply tied to the interpretation, may expand the possible content of an artwork.