Using the drawing functions, draw a bull’s eye.
The easiest way to accomplish this task is with the “addOval” and “addOvalFilled” methods available in JES. These can be found in JES Functions > Pictures. Using them you can get a method like:
```
def makeBullseye():
canvas = makeEmptyPicture(100,100)
addOval(canvas, 10,10, 80,80)
addOval(canvas, 20,20, 60,60)
addOval(canvas, 30,30, 40,40)
addOvalFilled(canvas,40,40,20,20,black)
return canvas
```
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