The keyword term "patriots day movie 2016" functions as a noun phrase. The main point and primary part of speech within this phrase is the head noun, "movie".
In this construction, the other components serve as modifiers to specify the head noun. "Patriots Day," itself a proper noun, acts as a noun adjunct (or attributive noun), describing the subject of the movie. The numeral "2016" functions as a postpositive adjective, specifying the film's release year. The entire phrase works as a single unit to name a specific entity, with "movie" as its grammatical core.
This determination is crucial because it establishes that the article's primary subject is the film itselfa specific cinematic work. The modifiers "Patriots Day" and "2016" simply narrow the focus to a particular film, ensuring the content will center on the analysis, review, or details of that production, rather than the historical event or the holiday in general.