{
  "card_type": "eml-build-card",
  "eml_version": "1.5",
  "name": "Ball comparison example",
  "description": "Builds trial variants and two explicit sequence orders from one source JSON.",
  "source": "experiment_source.json",
  "generator": {
    "entrypoint": "build_eml.py",
    "version": "1.0.0",
    "language": "python>=3.10"
  },
  "reproducibility": {
    "seed": 17,
    "sequence_materialization": "explicit"
  },
  "outputs": {
    "directory": "generated_eml",
    "config": "config.json",
    "trials": "trial.jsonl",
    "instructions": "instruction.jsonl",
    "readme": "README.md",
    "provenance": "build_provenance.json"
  },
  "contract": {
    "execution_stage": "build-time",
    "runtime_functions": false,
    "feedback": "static"
  }
}