Definition: 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: Pearl Harbor is a lagoon harbor on the island of Oahu , Hawaii , west of Honolulu . It has been long visited by the Naval fleet of the United States , before it was acquired from the Hawaiian Kingdom by the U.S. with the signing of the Reciprocity Treaty of 1875 . Much of the harbor and surrounding lands is now a United States Navy deep - water naval base . It is also the headquarters of the United States Pacific Fleet . The U.S. government first obtained exclusive use of the inlet and the right to maintain a repair and coaling station for ships here in 1887 . The attack on Pearl Harbor by the Empire of Japan on December 7 , 1941 , was the immediate cause of the United States ' entry into World War II .
Output:
Pearl Harbor