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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def example_rgb_to_xyz():
 """ The reverse is similar. """


    print("=== RGB Example: RGB->XYZ ===")
    # Instantiate an Lab color object with the given values.
    rgb = sRGBColor(120, 130, 140)
    # Show a string representation.
    print(rgb)
    # Convert RGB to XYZ using a D50 illuminant.
    xyz = convert_color(rgb, XYZColor, target_illuminant='D50')
    print(xyz)
    print("=== End Example ===\n")