The keyword term "911 berapa tahun" is an Indonesian interrogative phrase. Its primary grammatical function is to ask a question seeking a quantitative measure of time. This classification is the central point because it defines the term's purpose as an inquiry rather than a statement, description, or action.
A detailed analysis of its components reveals its structure. "911" functions as a proper noun, specifically referring to the historical event of the September 11, 2001 attacks. "Berapa" is an interrogative determiner, equivalent to "how many" in English, which modifies the subsequent noun. "Tahun" is a noun meaning "year" or "years." The combination of these partsa subject (the 9/11 event), an interrogative word, and a unit of measurement (years)constructs a direct question about the duration that has elapsed since the event occurred.
In practical application, this phrase is almost exclusively used as a search query. While it is grammatically an interrogative phrase, its functional identity is that of an information-seeking command directed at a search engine. Therefore, understanding its classification is crucial for content creation and SEO, as it signals a user's intent to find a specific numerical fact: the number of years since 2001. The answer to the query is calculated by subtracting 2001 from the current year.
