Lease Option Clause Retrieval Benchmark Dataset

#legal document retrieval #fine-grained clause retrieval #similar-clause discrimination #lease agreement review #real estate contract retrieval #lease rights analysis

5000
0.2GB
JSON
CATL
MOBIUSI INC

Updated:2026-11-05

AI Analysis & Value Prop

This benchmark focuses on five easily confused rights in lease agreements: renewal options, purchase options, expansion rights, rights of first tenancy, and rights of first refusal to purchase. Samples include retrieval queries, contract context, target clauses, and highly similar distractor clauses, alongside annotations for right-related semantic features, candidate comparisons, distractor strength, and retrieval difficulty. The data supports evaluation and improvement of legal RAG systems on fine-grained contractual right retrieval and discrimination.

Dataset Insights

Sample Examples

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Technical Specifications

Field	Type	Description
file_name	string	File name
source_record	object	The original query, right type, contract context, target clause, and distractor clauses for a retrieval benchmark sample.
evaluation_focus	array	The lease-right discrimination capabilities that this sample is designed to evaluate.
hard_negative_score	number	A score from 0 to 1 measuring distractor strength based on lexical similarity, contract context similarity, and how subtle the difference in rights is.
query_right_features	object	Semantic dimensions extracted from the original query and target clause to support fine-grained discrimination among rights.
retrieval_difficulty	string	The overall difficulty level of distinguishing fine-grained rights for a retrieval system on this sample.
candidate_comparison_annotations	array	Derived annotations produced by consistently distinguishing the target clause from highly similar distractor clauses.

Compliance Statement

Authorization Type	Proprietary - Commercial AI Training License (No Redistribution)
Commercial Use	Requires exclusive subscription or authorization contract (monthly or per-invocation charging)
Privacy and Anonymization	No PII, no real company names, simulated scenarios follow industry standards
Compliance System	Compliant with China's Data Security Law / EU GDPR / supports enterprise data access logs

Frequently Asked Questions

Which lease rights does the dataset cover?: It focuses on renewal options, purchase options, expansion rights, rights of first tenancy, and rights of first refusal to purchase. Highly similar distractor clauses help expose the subtle distinctions among these rights.

What evaluation information is included?: Samples include the original query, right type, contract context, target clause, and distractor clauses. Additional information covers query-related semantic features, candidate comparison annotations, distractor strength, and retrieval difficulty.

How can I obtain the dataset?: Check the product listing for the currently available delivery method, file format, and acquisition steps. The listing and delivered files define the available contents.

What is the dataset suitable for, and how can I confirm licensing?: It is suitable for legal RAG retrieval evaluation, contract clause matching, retrieval ranking improvement, and research on contractual right discrimination. Review the product listing or accompanying terms for the applicable license and usage restrictions.

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Cite this Work

@dataset{Mobiusi2026,
  title={Lease Option Clause Retrieval Benchmark Dataset},
  author={MOBIUSI INC},
  year={2026},
  url={https://www.mobiusi.com/datasets/2a442a09e5a4bc882937e6ed4dec65ce},
  urldate={2026-10-15},
  keywords={lease agreement dataset,option clause retrieval,legal RAG evaluation,contract clause benchmark,lease renewal option,purchase option,hard negative clauses,legal retrieval benchmark},
  version={1.0}
}

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