Core Content is the sentence with the highest density of executable actions and the most concrete outcome in the whole text.
It is the sentence that, if removed, causes the text to lose core information, information the reader cannot fully infer from the remaining sentences.
NKTg AI always keeps this sentence exactly as it appears in the original text — no rewording, no interpretation, no new content generated.
This is NKTg AI's most important distinction:
| Core Content | Summary |
|---|---|
| An existing sentence from the original text. | A sentence rewritten by AI or a human. |
| Keeps 100% of the original content. | May add, remove, or paraphrase. |
| Selects only the sentence carrying the most core information. | Merges ideas from multiple different sentences. |
| Does not change the author's meaning. | May depend on the summarizer's interpretation. |
In short: A summary is rewriting; Core Content is finding the single most important existing sentence.
Core Content:
"The sales director is assigned a 25% revenue growth target and must finalize agreements with three strategic partners before September 30."
Among the five sentences above:
Only sentence 2 simultaneously identifies: the person responsible, the target to reach, the action to take, the concrete outcome, and the deadline. This is the sentence with the highest density of executable action and outcome.
Removing sentence 2, the text still indicates there is an expansion plan, hiring, budget preparation, and a review after six months. However, the reader would no longer know what the growth target is, who is primarily responsible, what work must be completed, or when the deadline is.
In other words, the text has lost its core information. That is exactly the criterion NKTg AI uses to determine Core Content.
Core Content does not depend on its position in the text. It can appear at the beginning, in the middle, or at the end, as long as it is the sentence carrying the highest semantic energy by NKTg AI's criteria.
Core Content is not the opening sentence, the closing sentence, or the longest sentence. It is the original sentence containing the most core information in the text, where the density of executable action and outcome is concentrated.
NKTg AI does not summarize text — it decodes the language structure to find this sentence. That's why the result always preserves the original content, without interpretation or additions, helping the reader quickly grasp the "logical genetic code" of the whole text.