2. Subject & Action of a Prompt

A Prompt has two essential parts that determine clarity and output quality.

Subject + Action

Subject: What the prompt is about
Examples:
• Kanji preparation method
• GATE XL Life Sciences
• South Indian traditional foods

Action: What you want the AI to do with the subject
Examples:
• Explain scientifically
• Break into slides
• Give Instagram caption
• Add citations

Therefore:
Just as every sentence has a Subject + Predicate,
every prompt has a Subject + Action Directive.

Example:
Prompt: Explain the traditional preparation of kanji and add scientific evidence.
Subject → traditional preparation of kanji
Action → explain + add scientific evidence

This structure is the core of Prompt Grammar.