Input (grade 13): The siamang (Symphalangus syndactylus) is a tailless, arboreal, black-furred gibbon native to the forests of Malaysia, Thailand, and Sumatra.
Output (grade 8): The Siamang (Symphalangus syndactylus) is a tailless, black furred gibbon native to the forests of Malaysia, Thailand, and Sumatra. It lives in trees, that's why it is called arboreal.