The keyword phrase "patriot day movie director" functions as a noun phrase. The main point or core subject within this phrase is the final word, "director," which is a noun. The preceding words, "patriot day" and "movie," act as adjectives or modifiers that specify which director is being referenced.
In this grammatical construction, "patriot day" and "movie" are noun adjuncts (or attributive nouns). They modify the head noun "director" to precisely identify the subject as the individual who directed the film titled Patriots Day. The specific person this noun phrase refers to is Peter Berg. Therefore, the analysis identifies a person, not an action or a quality, as the central topic.
For the purpose of writing an article, this grammatical determination is critical because it establishes that the article's primary focus must be on the personPeter Berg. The content should center on his directorial vision, his creative decisions in making the film, his process, and his impact on the final product. The terms "patriot day" and "movie" simply provide the specific context for the discussion about the director.