RDF vocabulary for the Islam West Africa Collection: AI processing provenance and model-keyed sentiment annotation properties for Omeka S
# IWAC Vocabulary
RDF vocabulary for the Islam West Africa Collection (IWAC), a digital archive of primary sources on Islam in West Africa hosted by the Leibniz-Zentrum Moderner Orient (ZMO).
## Overview
This vocabulary provides properties for:
- **AI Processing Provenance**: Track which AI models generated specific metadata (OCR, summaries, named entity recognition)
- **Sentiment Analysis**: Store multi-model sentiment analysis results, one property set per annotator model
## Vocabulary Details
| Field | Value |
|-------|-------|
| **Namespace URI** | `
islam.zmo.de` (non-dereferenceable; the file is the canonical copy) |
| **Prefix** | `iwac` |
| **Format** | Turtle (.ttl) |
| **Languages** | English, French |
| **Version** | 1.3 (`owl:versionInfo`), modified 2026-08-14 |
| **Properties in this file** | **32** — 8 provenance + 24 sentiment |
| **Properties installed on `islam.zmo.de`** | **80** (vocabulary 10) |
> **The file and the live archive have still not converged, and the 2026-08-14
> upload shows why: Omeka applied the additions and not the deletions.** The file
> was trimmed to 32 properties on 2026-08-07 and its Google slot re-pointed to
> Gemma 4 31B on 2026-08-14. Uploading it added Gemma's six — 74 → **80** — while
> all 48 properties the file omits stayed installed. Do not read a green
> pre-flight as a promise that they will go; plan on removing them separately, or
> on their staying.
>
> That is cosmetic, not a data problem. Every one of the 48 is verified at **0
> items**: the generation-1 values were deleted separately through the item API,
> and the rest were never written. Nothing reads them, and the pipeline resolves
> only the 25 terms it needs. The one real consequence is that a property list
> read from the live API is not the vocabulary this file describes. See
> Updating an already-imported vocabulary.
>
> Counts below verified against the live API on **2026-08-14**.
## Properties
### AI Provenance (8 proper …