The keyword term functions grammatically as a noun phrase. In this construction, the word "man" serves as the head noun, which is the central element of the phrase. The preceding elements, "september 11th" and "florida," act as modifiers that specify and narrow the identity of the noun.
A detailed grammatical analysis reveals that both "september 11th" and "florida" function as adjectival modifiers. "Florida" is a proper noun used as a noun adjunct, specifying the geographical origin or location of the individual. "September 11th" is a date that operates as a descriptive adjective, linking the individual to a specific temporal context or event. The sequence of these modifiers creates a highly specific identifier, distinguishing this particular individual from any other.
For the purpose of an article, this grammatical determination is crucial. Because the term is a noun phrase, the main point or subject of the article must be the person himself. The article's focus would be on the identity, actions, or narrative of a specific male individual associated with that state and that historical date, rather than on the date or location as abstract concepts.