The keyword phrase "September 11th attacks timeline" functions as a noun phrase. The main point, or head noun, of this phrase is the word "timeline".
In this construction, the words "September 11th attacks" act together as a compound modifier, specifically a noun adjunct phrase, that describes the noun "timeline." A grammatical breakdown is as follows:
- timeline: This is the core noun. It establishes the format and subject of the articlea chronological list of events.
- attacks: This is a noun that functions as an adjective (an attributive noun) modifying "timeline." It specifies that the timeline is about attacks.
- September 11th: This is a proper noun (a date) that functions as an adjective modifying "attacks." It specifies which particular attacks are the subject.
This grammatical determination is crucial because it dictates the article's structure and focus. By identifying "timeline" as the main point, the content must be organized chronologically, presenting events in the sequence they occurred. The modifiers "September 11th attacks" define the precise scope of these events. This ensures the article directly addresses the user's intent for a sequential account, rather than a general analysis of causes, consequences, or related topics.
