The keyword term "patriots day a true story" functions as a noun phrase. In this construction, the proper noun "Patriots Day" is identified and further described by the appositive phrase "a true story." As a keyword, the entire term operates as a single conceptual unit, a compound noun that names the specific subject of the article.
A grammatical breakdown of the phrase shows how its components create a unified subject. "Patriots Day" serves as the primary proper noun, referring to the specific film or event. The phrase "a true story" acts in apposition to it, meaning it renames or clarifies the noun. Within this appositive, "story" is the head noun, "true" is an adjective modifying it, and "a" is an indefinite article. The entire string is treated as a single entity, particularly in the context of a title or search query, to pinpoint a distinct topic for discussion.
The practical implication of this grammatical classification is that it establishes the article's main point. By identifying the keyword as a noun phrase, the article's purpose is set to define, analyze, or elaborate upon this "thing"the factual basis of the movie Patriots Day. The content must therefore focus on providing information about this subject, treating the keyword not as an action or descriptor but as the central topic to be explored and explained.
