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.

Vinegar is a liquid consisting of about 5 -- 20 % acetic acid ( CH COOH ) , water , and other trace chemicals , which may include flavorings . The acetic acid is produced by the fermentation of ethanol by acetic acid bacteria . Vinegar is now mainly used as a cooking ingredient , or in pickling . As the most easily manufactured mild acid , it has historically had a great variety of industrial , medical , and domestic uses , some of which ( such as its use as a general household cleaner ) are still commonly practiced today .
Vinegar

A PT boat ( short for Patrol Torpedo boat ) was a torpedo - armed fast attack craft used by the United States Navy in World War II . It was small , fast , and inexpensive to build , valued for its maneuverability and speed but hampered at the beginning of the war by ineffective torpedoes , limited armament , and comparatively fragile construction that limited some of the variants to coastal waters .
PT boat

Lascaux ( French : Grotte de Lascaux , `` Lascaux Cave '' ; English : / læsˈkoʊ / , French : ( lasko ) ) is the setting of a complex of caves near the village of Montignac , in the department of Dordogne in southwestern France . Over 600 parietal wall paintings cover the interior walls and ceilings of the cave . The paintings represent primarily large animals , typical local and contemporary fauna that correspond with the fossil record of the Upper Paleolithic time . The drawings are the combined effort of many generations , and with continued debate , the paintings are estimated around 17,000 years BP . Lascaux was inducted into the UNESCO World Heritage Sites list in 1979 , as element of the Prehistoric Sites and Decorated Caves of the Vézère Valley .

Lascaux