The keyword term functions grammatically as a noun phrase. The head of this phrase, and therefore its principal part of speech, is the noun "movie." The other words in the sequence serve to modify this central noun, providing more specific details about it.
In this construction, "movie" is the head noun, the core subject being identified. It is modified by two preceding elements. The term "Patriots Day," a proper noun, acts as a noun adjunct or adjectival noun, modifying "movie" by specifying its subject matter or title. The word "old" is a descriptive adjective that further modifies "movie" by indicating its age or a non-recent release date. The entire sequence combines these modifiers to pinpoint a specific cinematic work.
This grammatical analysis confirms that the subject of the article is an objecta film. The main point is the noun ("movie"), while the words "Patriots Day" and "old" are essential classifiers that define the specific topic. Therefore, any content developed should be centered on a film, using the other terms as key attributes for identification and description.
