# EXP1 — Nursery results

parses evaluated: 72   json failures: 0   anonymized evaluated: 12

## Recovery (top-1 across all six ground truths, structure-only WL)

- overall: **0.40**
- scheme=eventseq_v0: 0.31  (wl_vs_truth mean 0.377)
- scheme=relgraph_v0: 0.50  (wl_vs_truth mean 0.391)
- instrument=mistral: 0.36  (wl_vs_truth mean 0.347)
- instrument=qwen: 0.44  (wl_vs_truth mean 0.421)
- rendering=events: 0.46  (wl_vs_truth mean 0.446)
- rendering=prose: 0.29  (wl_vs_truth mean 0.315)
- rendering=pseudocode: 0.46  (wl_vs_truth mean 0.390)

## P1 — designed near-miss family (cycle3/feedback3/inversion)

- family parses landing top-1 INSIDE the family: 0.36
- of those, wrong member (confused sibling): 5/13
- P1 verdict: NOT SUPPORTED (structure-only comparison cannot separate the family)

## P2 — sequence type vs branching shapes (tree, diamond)

- relgraph: top1 0.83, wl_vs_truth 0.347
- eventseq: top1 0.00, wl_vs_truth 0.053
- destroyed structures per parse (GED): relgraph 3.8, eventseq 2.7
- P2 verdict: SUPPORTED

## P3 — label destruction (prose, relgraph, both instruments)

- prose top-1: 0.33   anonymized top-1: 0.42   drop: -0.08
- P3 verdict: SUPPORTED (structure survives noun loss)

## P4 — pseudocode vs prose

- pseudocode top-1 0.46  vs prose 0.29
- P4 verdict: SUPPORTED

## Confusion (rows=true shape, cols=top-1; relgraph parses only)

| true\top1 | chain | cycle3 | diamond | feedback3 | inversion | tree |
|---|---|---|---|---|---|---|
| chain | 5 | 0 | 0 | 0 | 0 | 1 |
| cycle3 | 2 | 3 | 1 | 0 | 0 | 0 |
| diamond | 0 | 0 | 4 | 0 | 0 | 2 |
| feedback3 | 2 | 0 | 4 | 0 | 0 | 0 |
| inversion | 1 | 4 | 0 | 0 | 0 | 1 |
| tree | 0 | 0 | 0 | 0 | 0 | 6 |

lineage spot-check: 10/10 parses walk back to artifacts