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.

[Q]: '' What You Leave Behind '' is the series finale of the television show Star Trek : Deep Space Nine , the 175th and 176th overall episodes , and the 25th and 26th episodes of the seventh season . The episode was written by showrunner Ira Steven Behr and Hans Beimler and directed by Allan Kroeker . It originally aired on June 2 , 1999 .
[A]: What You Leave Behind

[Q]: '' Hey Joe '' is an American popular song from the 1960s that has become a rock standard and has been performed in many musical styles by hundreds of different artists . '' Hey Joe '' tells the story of a man who is on the run and planning to head to Mexico after shooting his unfaithful wife . The song was registered for copyright in the United States in 1962 by Billy Roberts . However , diverse credits and claims have led to confusion about the song 's authorship . The earliest known commercial recording of the song is the late - 1965 single by the Los Angeles garage band the Leaves ; the band then re-recorded the track and released it in 1966 as a follow - up single which became a hit . The best - known version is the Jimi Hendrix Experience 's 1966 recording . The song title is sometimes given as '' Hey Joe , Where You Gonna Go ? '' or similar variations .
[A]: Hey Joe

[Q]: The Pareto principle ( also known as the 80 / 20 rule , the law of the vital few , or the principle of factor sparsity ) states that , for many events , roughly 80 % of the effects come from 20 % of the causes . Management consultant Joseph M. Juran suggested the principle and named it after Italian economist Vilfredo Pareto , who noted the 80 / 20 connection while at the University of Lausanne in 1896 , as published in his first paper , '' Cours d'economie politique '' . Essentially , Pareto showed that approximately 80 % of the land in Italy was owned by 20 % of the population ; Pareto developed the principle by observing that about 20 % of the peapods in his garden contained 80 % of the peas .
[A]:
Pareto principle