You are given a sentence and your task is to generate another sentence that supports the given input.

Input: Consider Input: A small protozoan named Trichonympha companula lives in the termite s digestive system and does the job of breaking down the cellulose the termite eats.

Output: Certain anaerobic parabasalid species exist in the digestive tracts of termites and wood-eating cockroaches, where they contribute an essential step in the digestion of cellulose.


Input: Consider Input: The pulmonary arteries carry oxygen-poor blood from the heart to the lungs, and the pulmonary veins transport oxygen-rich blood from the lungs to the heart.

Output: After the blood in the pulmonary capillaries becomes saturated with oxygen, it leaves the lungs and travels to the heart.


Input: Consider Input: When the parallel rays of a light source strike a convex lens the rays will concentrate or focus at a specific point, the focal point .


Output: Convex lenses are thicker in the middle than at the edges so they cause rays of light to converge, or meet, at a point called focus.