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.

Example Input: Smilodon is an extinct genus of machairodont felid . It is one of the most famous prehistoric mammals , and the best known saber - toothed cat . Although commonly known as the saber - toothed tiger , it was not closely related to the tiger or other modern cats . Smilodon lived in the Americas during the Pleistocene epoch ( 2.5 mya -- 10,000 years ago ) . The genus was named in 1842 , based on fossils from Brazil . Three species are recognized today : S. gracilis , S. fatalis , and S. populator . The two latter species were probably descended from S. gracilis , which itself probably evolved from Megantereon . The largest collection of Smilodon fossils has been obtained from the Rancho La Brea Tar Pits in Los Angeles , California .
Example Output: Smilodon

Example Input: The main role of chloroplasts is to conduct photosynthesis , where the photosynthetic pigment chlorophyll captures the energy from sunlight and converts it and stores it in the energy - storage molecules ATP and NADPH while freeing oxygen from water . They then use the ATP and NADPH to make organic molecules from carbon dioxide in a process known as the Calvin cycle . Chloroplasts carry out a number of other functions , including fatty acid synthesis , much amino acid synthesis , and the immune response in plants . The number of chloroplasts per cell varies from one , in unicellular algae , up to 100 in plants like Arabidopsis and wheat .
Example Output: Chloroplast

Example Input: The Teton Dam was an earthen dam on the Teton River in Idaho , United States . It was built by the Bureau of Reclamation , one of eight federal agencies authorized to construct dams . Located in the eastern part of the state , between Fremont and Madison counties , it suffered a catastrophic failure on June 5 , 1976 , as it was filling for the first time .
Example Output:
Teton Dam