Task: Text Simplification
Input (English): thirdly , for some color blind people , color can only be distinguished if there is a sufficient " mass " of color : thin lines might appear black while a thicker line of the same color can be perceived as having color.
Output (English): for a portion of color blind people , color can only be distinguished if there is enough mass of the color , for instance , a thin line may appear black while a thicker line of the same color can be distinguished as a color.