The keyword term functions grammatically as a compound noun or noun phrase. In this construction, the head noun, which establishes the core subject, is "parking." The preceding words"patriot," "game," and "day"act as noun adjuncts (or adjectival nouns), cumulatively modifying and specifying the type of parking being discussed.
A detailed analysis reveals a hierarchical modification structure. The primary noun is "parking." This noun is modified by the preceding three-word unit, "patriot game day." Within that unit, "day" is modified by "game," and the resulting "game day" is further specified by "patriot." This chain of modifiers progressively narrows the topic from the general concept of parking to the highly specific context of parking for a New England Patriots football game.
This grammatical determination is crucial because it establishes that the article's main point must be the singular concept of this specific parking system. The article should not be about the Patriots team, game days in general, or the broad topic of parking. Instead, its focus is defined by the noun phrase itself: the logistics, locations, costs, rules, and overall experience associated with the entity of "patriot game day parking." The entire phrase must be treated as the central subject to be explained and detailed.
