Given a text passage, come up with an appropriate title for it. The title should accurately represent what the main focus of the passage is. The title of a passage may be present in the first few sentences of the passage and/or be referred to multiple times in the passage. The title should be 1-5 words long.

Input: Consider Input: The stapes or stirrup is a bone in the middle ear of humans and other mammals which is involved in the conduction of sound vibrations to the inner ear . The stirrup - shaped small bone is on and transmits these to the oval window , medially . The stapes is the smallest and lightest named bone in the human body , and is so - called because of its resemblance to a stirrup ( Latin : Stapes ) .

Output: Stapes


Input: Consider Input: Aquatic respiration is the process whereby an aquatic animal obtains oxygen from water .

Output: Aquatic respiration


Input: Consider Input: Intrinsic factor ( IF ) , also known as gastric intrinsic factor ( GIF ) , is a glycoprotein produced by the parietal cells of the stomach . It is necessary for the absorption of vitamin B ( cobalamin ) later on in the ileum of the small intestine . In humans , the gastric intrinsic factor protein is encoded by the GIF gene .


Output: Intrinsic factor