The keyword term "september 11th powerball numbers" functions as a noun phrase. The main point and the grammatical core of this phrase is the noun "numbers." The other words within the term act as modifiers to specify which particular numbers are being referenced.
A grammatical breakdown of the phrase clarifies the role of each component. "Numbers" serves as the head noun, identifying the subject matter. The word "Powerball" is a proper noun used as an attributive noun (a noun functioning as an adjective) to specify the type of lottery. The phrase "September 11th" is a compound modifier that acts as an adjective, pinpointing the specific date of the lottery drawing. These modifiers work together to narrow the focus from any numbers to a very specific set of data.
Recognizing the keyword as a noun phrase is critical because it dictates that the article's subject is an entitya specific set of information. Consequently, the article should be structured to define, identify, and provide details about this entity. The primary purpose will be to answer the implied question, "What were the winning Powerball numbers on September 11th?", rather than to describe an action (verb) or a quality (adjective). The content, therefore, must be informational and data-centric.