The analogy given is "canvas : artist :: clay : potter." This relationship shows that an artist uses a canvas as their medium, just as a potter uses clay.
To find a sentence that reflects this relationship, we need a sentence that states that a potter works with clay in a similar way that an artist works with a canvas.
Here’s a possible sentence that shows this relationship:
"A potter shapes clay just as an artist paints on a canvas."
This sentence indicates that both the potter and the artist work with their respective materials to create art.