The image shows an open book with a drawing of a circle on it.
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The image shows an open book with a drawing of a circle on it. The book is placed on a flat surface and the text on the page is visible. The circle is composed of several concentric circles, each with a different color and size. The colors range from light blue to dark blue, and the sizes range from small to large. The text is written in a black font and is surrounded by a thin black border.
