The Sentence Diagram Generator does not provide visual outputs directly. However, I can guide you on how to diagram the sentence "The sign of the broken sword" in a way similar to the classical approach used in homeschooling groups like Classical Conversations.

1. Identify the main components:

   • Subject: "The sign"
   • Prepositional phrase: "of the broken sword"

2. Diagram Structure:

   • Start with the subject "sign" on a horizontal line.
   • Place "The" as a modifier below "sign."
   • Draw a vertical line to separate the prepositional phrase.
   • Write "of" on a slanted line extending from "sign."
   • Place "sword" on a horizontal line after "of."
   • Add "the" as a modifier below "sword."
   • Include "broken" as an adjective below "sword."

This structure visually represents the grammatical relationships within the sentence. For a precise visual diagram, please use the Sentence Diagram Generator tool to create it based on these instructions.