The keyword term "cast of patriots day" is a noun phrase. Its grammatical function within a sentence is that of a noun, representing a specific entitynamely, the group of actors who performed in the film Patriots Day.
A detailed grammatical breakdown shows that the head of the phrase is the noun "cast." This noun is modified by the prepositional phrase "of Patriots Day." In this modifying phrase, "of" is the preposition, and the proper noun "Patriots Day" (the title of the film) is the object of the preposition. The entire prepositional phrase functions adjectivally, specifying which particular cast is being referenced.
Understanding this classification is crucial for its application in writing. As a noun phrase, it can act as the subject of a sentence (e.g., "The cast of Patriots Day was exceptional."), a direct object (e.g., "The director selected the cast of Patriots Day."), or the object of another preposition. This ensures grammatical correctness and establishes the phrase as the central topic or entity being discussed in an article.
