The keyword phrase "patriots day states that celebrate" functions grammatically as a noun phrase. The core component, or head of the phrase, is the plural noun "states." The preceding proper noun "Patriots Day" acts as a noun adjunct, modifying "states" to specify the context. The final clause, "that celebrate," is a restrictive relative clause that further defines which specific group of states is the subject.
Analyzing the structure in detail, "states" is the central element being discussed. The phrase is not a complete sentence but a descriptive label for a specific group. The modifier "Patriots Day" narrows the topic from all states to only those relevant to this holiday. The relative clause "that celebrate" is essential to the meaning, as it limits the noun "states" to only those which officially observe or acknowledge the holiday, distinguishing them from states that do not. This grammatical construction precisely defines the article's subject matter.
Understanding that the keyword is a noun phrase is crucial because it dictates that the article's main point must be the identification and description of these specific states (e.g., Massachusetts, Maine, Wisconsin). The focus is on the "who" or "which" (the states themselves), rather than the "what" (the act of celebration). Therefore, the content should be structured to answer the implied question, "Which states are the ones that celebrate Patriots' Day?", by providing a definitive list and related information about those specific political entities.
