The keyword term functions as a noun phrase. Its core is an implied noun like "content," "footage," or "information," which is being modified by the other components. The proper noun "Patriots Day" acts as a noun adjunct, specifying the subject of the content. The prepositional phrase "behind the scenes" serves as an adjectival modifier, describing the nature of that content.
Grammatically, the phrase is structured with "Patriots Day" (a proper noun referencing the 2016 film) defining what the subject is about. The second part, the idiomatic prepositional phrase "behind the scenes," qualifies the subject by indicating its focus on the production, development, and non-public aspects of the film, rather than the finished cinematic product itself. The entire phrase operates as a single conceptual unit that names a specific topic, which is the defining characteristic of a noun phrase.
For the article, this classification is crucial because it establishes the main point as a subject to be described, explored, or presented. The article's purpose will be informational, focusing on tangible elements such as production details, interviews with the cast and crew, on-set anecdotes, or the making-of process. The core of the article is not an action (verb) or a quality (adjective), but a specific body of material.
