The keyword term "Patriots' Day next year" functions grammatically as a noun phrase. The core of this phrase is the proper noun "Patriots' Day," which identifies a specific holiday. The entire phrase serves to name a particular instance of that event.
A detailed grammatical analysis reveals that the phrase is composed of two main parts. The first part, "Patriots' Day," is a compound proper noun acting as the head of the phrase. The second part, "next year," is an adverbial phrase of time. In this construction, the adverbial phrase "next year" acts as a post-nominal modifier, specifying which "Patriots' Day" is being referenced. It functions similarly to an adjective by describing or limiting the noun, answering the question, "Which Patriots' Day?"
Recognizing the term as a noun phrase is crucial because it dictates its function within a sentence. As a noun phrase, it can act as the subject (e.g., "Patriots' Day next year will fall on April 21st."), the direct object (e.g., "The committee is planning Patriots' Day next year."), or the object of a preposition (e.g., "Information about Patriots' Day next year is now available."). This grammatical role as a noun is its primary attribute for content creation.
