September 11, 2001, was a Tuesday. Grammatically, the keyword term "11 september 2001 day of the week" functions as a noun phrase. Its purpose is to name a specific piece of information.
In this construction, the head noun is "day." The specific date, "11 september 2001," acts as a noun adjunct or adjectival phrase, modifying "day" to specify which particular day is being referenced. The prepositional phrase "of the week" further modifies the head noun "day," clarifying the category of information being sought (i.e., Monday, Tuesday, Wednesday, etc.). The entire sequence combines to form a single conceptual unit that names a singular entity.
As a noun phrase, this term can function as the subject, object, or complement in a sentence. For instance, in the statement, "The [11 september 2001 day of the week] is the subject of this article," the entire bracketed phrase serves as the subject. This grammatical classification is crucial for understanding how the term functions within search algorithms and linguistic analysis, as it is treated as a distinct entity rather than a series of disconnected words.
