Grammatically, the entire keyword term functions as a noun phrase. While composed of individual nouns ("empire," "youtube," "code"), a modifier ("x"), and a date specifier ("11 sep"), its collective use as a keyword assigns it a nominal function. It operates as a proper noun, designating a specific and unique subject, topic, or entity for the purpose of search, indexing, and discussion.
The determination of this term as a noun phrase is based on its function within information architecture and search contexts. In these systems, such strings are treated as labels or identifiers for a specific piece of content or concept. An analysis of its components suggests a highly specific topic: "x" likely acts as a variable or a specific designator for an "empire" (which could be political, corporate, or fictional). The date "11 sep" situates the topic in the context of September 11th. The final components, "youtube code," point toward a specific artifact, such as a promotional code, a hidden message, or a software element found on or related to a YouTube video. The entire phrase, therefore, names a concept at the intersection of these elements.
Treating the phrase as a singular noun is the crucial first step for analysis because it establishes the term as the central subject of the article. This allows for a structured investigation into what this specific entity refers tofor instance, a video game secret, an alternate reality game (ARG) clue, or a conspiracy theory video. The grammatical classification solidifies the term not as a random string of words, but as the proper name for the specific phenomenon to be examined.
