# Entity Extraction Rules — Supply Chain Infospace

## What Constitutes an Entity

Extract a concept as an entity when it is:

1. **Named**: referred to by a consistent, recognisable label in the
   source material
2. **Distinct**: meaningfully different from other entities being extracted
3. **Explanatory**: contributes to understanding how supply chains work,
   fail, or could be improved
4. **Mappable**: has a plausible correspondence to at least one concept in
   the Wealth of Nations reference set

Do NOT extract:
- Proper nouns for specific companies or products (Toyota, Amazon) unless
  they name a concept (e.g., the Toyota Production System is a concept)
- Historical examples unless the example itself is the concept
- Vague modifiers (e.g., "lean", "agile" as standalone adjectives)

## Granularity Rules

Target 4–8 entities per source document. Avoid:
- Entities so broad they subsume multiple distinct mechanisms (split them)
- Entities so narrow they are examples of a broader concept (elevate them)
- Entities that restate the same concept with different words (merge them)

## Naming Conventions

- Title case: `Bullwhip Effect`, not `bullwhip effect`
- Noun phrases: `Supply Chain Visibility`, not `supply chain is visible`
- Avoid acronyms in titles: `Just-in-Time Inventory`, not `JIT Inventory`

## WoN Cross-Reference

For each entity, consult the WoN core entity reference
(`artifacts/won-reference/core-entities.md`) to identify the most relevant
Wealth of Nations concept. Every entity should have a WoN Concept section —
even if the mapping is weak, noting the absence of a direct analogue is
informative.

## Supply Chain Domain Assignment

Assign the supply chain domain that best characterises the entity:

- **Coordination**: mechanisms that synchronise activity across chain nodes
- **Capital Management**: decisions about how working capital is deployed
- **Market Structure**: competitive arrangements, power relations, platform dynamics
- **Risk**: disruption, fragility, resilience
- **Logistics**: physical movement, warehousing, last-mile
