This image is of a large, sturdy wall made of stone and other materials. It appears to be quite high, and is surrounded by trees. The wall has several steep steps carved into it, making it easier for people to climb up or down the side of the wall. The wall is not very wide, but is tall, meaning it takes up a lot of space in this picture. The trees surrounding the wall are tall and healthy, with their leaves green and their branches swaying gently in the breeze. In the distance, there appears to be a small village or town on the other side of the wall. ``` graph TD; A(5) --> B(2); B(2) --> C(1); C(1) --> D(1); D(1) --> E(3); E(3) --> F(2); F(2) --> G(4); G(4) --> H(5); H(5) --> A(5); This is a simple graph with 7 nodes (vertices). The length of the shortest path between any two nodes is 2, except between nodes D and G, which is ,The number of nodes is 7.

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