The main point of the keyword term "free patriot day coloring sheets" is a noun. The entire phrase functions as a noun phrase, with the word "sheets" serving as the head noun, which is the core subject being described.
In a grammatical analysis of the phrase, each preceding word acts as a modifier that specifies the characteristics of the head noun, "sheets." "Coloring" is a participle adjective indicating the purpose of the sheets. "Patriot Day" is a compound proper noun acting as an attributive noun (a noun used as an adjective) to define the theme. "Free" is an adjective that describes the cost or accessibility of the sheets. The structure is a chain of modifiers qualifying a central noun: [Adjective] + [Attributive Noun] + [Participle Adjective] + [Head Noun].
Recognizing "sheets" as the core noun is crucial because it establishes that the article's subject is a tangible or downloadable item. The content must therefore be centered on providing, describing, or linking to these specific items. The modifiers ("free," "Patriot Day," "coloring") are not the main subject but are essential attributes that define the user's specific interest and must be addressed by the article to be relevant.