Prompt Engineering for Entity and Relationship Extraction

Effective prompt engineering: Use structured JSON output with defined schema. Include 2-3 few-shot examples (improves quality by 20-30%). Define allowed entity types (Person, Organization, Location, Concept, Technology, Event). Extract relationships as (source, type, target, description) tuples. Run extraction twice — first for entities, second for relationships (improves recall by 15%). Validate JSON output and implement fallback extraction.