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: Profitability index ( PI ) , also known as profit investment ratio ( PIR ) and value investment ratio ( VIR ) , is the ratio of payoff to investment of a proposed project . It is a useful tool for ranking projects because it allows you to quantify the amount of value created per unit of investment .
Example Output: Profitability index

Example Input: Malchus / ˈmælkəs / is the servant of the Jewish High Priest Caiaphas who participated in the arrest of Jesus as written in the four gospels . According to the Bible , one of the disciples , Simon Peter , being armed with a sword , cut off the servant 's ear in an attempt to prevent the arrest of Jesus .
Example Output: Malchus

Example Input: March for Our Lives ( sometimes MFOL ) was a student - led demonstration in support of tighter gun control that took place on March 24 , 2018 , in Washington , D.C. , with over 800 sibling events throughout the United States and around the world . Student organizers from Never Again MSD planned the march in collaboration with the nonprofit organization Everytown for Gun Safety . The event followed the February 14 , 2018 Stoneman Douglas High School shooting in Parkland , Florida , which was described by many media outlets as a possible tipping point for gun control legislation .
Example Output:
March for Our Lives