Finding a Lawyer: Which Sources AI Engines Name and Cite
Evidence pack, 5W Public Relations Research

Measured: October 26, 2026 · 24 questions × 3 runs · 288 AI answers
This pack holds the measurement data behind the report. Every number in the report can be
recounted from these files. Counts in the report come from summary.csv and per_engine.csv.

Files:
- summary.csv: One row per tracked name: answers naming it, appearance rate and 95% interval, first-mention position, own-domain citation, citation share, Google AI Overview counts and five-engine totals.
- per_engine.csv: The same counts split by engine (ChatGPT, Claude, Gemini, Perplexity).
- significance.csv: Pairwise comparisons between the leading names (z-test, p-value, whether the 95% intervals overlap).
- sources.csv: Cited domains: number of citations, share of all citations, and how many answers cited each domain.
- entity_rollups.csv: Spellings and name variants counted together with each tracked name.
- trials.csv: One row per answer: engine, question, run, names found, citations, measurement time.
- raw_responses.jsonl: The full text of every answer and Google AI Overview, with its citations, one JSON record per line.

SHA-256 checksums:
a00790af05db423861ecf1dce196bc65fb173e4d2183248c44bf5edb6babdba6  summary.csv
1b8c7c54eb804fd4edbd5fdae916318751d44ea7d441b570799dcd94e0c2e643  per_engine.csv
cc596701e3577389c6a6b4848c7e512285510d0076cc23927e834ad5704988a6  significance.csv
730b4aab3dab563fdbc8b4b0fbfa556ebcdf95a45a318f69f0f7f8f99ca1aa01  sources.csv
e513a801f664c6f167cca1d91479331517c66fe88fc256239bc0977394bd2ac3  entity_rollups.csv
c87b4d6d976be89d0f0b020c6f670be974abf13b5bfb293fada39c888fd6dfb1  trials.csv
3e5fc1cd2b462eddde4a63ab5ff3b479cefb5fbcb77f2026098fdaa896c7f644  raw_responses.jsonl

Questions or corrections: info@5wpr.com
