Task: Text Simplification
Input (English): the nervous system derives color by comparing the responses to light from the several types of cone photoreceptors in the eye.
Output (English): the nervous system gets color by comparing the responses -lrb- acting in reply to one 's action -rrb- to light from the several types of cone photoreceptors -lrb- a structure in a living organism , esp. a sensory cell or sense organ , that responds to light falling on it -rrb- in the eye.