Definitional (What is?)

Definitional is a semantic frame question type that answers 'what is X?' and requires an entity definition. This is the most commonly covered question type, usually placed at the start of an article in BLUF format — the key answer in the first 50 words. AI Search generates definitional questions as one of the first sub-queries in fan-out, making it the most important question type to cover. The answer should be precise, contain the Central Entity as Agent in an SRL sentence, and provide concrete facts.

For example: 'Operational leasing is a form of financing where the lessee uses an asset for 24-60 months without ownership rights, with the ability to deduct 100% VAT from payments' — it's immediately clear what it is, how long, what legal status, and what tax benefit. In practice, every article's first section should answer the definitional question because AI scans text looking for entity definitions as the starting point for further citations. The definitional question works directly with BLUF — both operate in the same first-50-words zone.