Given a document, generate a short title of the document. The title should convey the main idea/event/topic about which the document is being written. Note that URLs in the text have been replaced with [Link].

Example Input: "Did they cut more calories from their diet ... or did they become more physically active?" asked study author Kevin Hall   a senior investigator with the National Institute of Diabetes and Digestive and Kidney Diseases.
 Hall  had been "puzzled by how quickly the contestants were losing weight." So he contacted the show's physician and began studying the season eight contestants.
Early on   Hall  observed that weight loss was better predicted by food intake  not physical activity alone. But in the long term  the opposite was true.
"You have to be very physically active in order to keep the weight off  " Hall  said.
 Hall 's findings echo previous studies that promote more exercise for long-term weight loss maintenance. However  experts caution that doesn't mean people can neglect their diets in the long run  either.
This method  however  was not able to tell how much of the physical activity was due to normal daily activities -- like cleaning the house or walking the dog -- versus following a workout plan   Hall  said.
Six years later  however  the contestants' resting metabolisms still hadn't sped back up   Hall  showed in a study last year.
For  Hall   metabolic changes are just one part of the puzzle. Genetics may also play a role  as well as social factors that can make it hard for some people to incorporate so much exercise in their daily lives.
 Hall  added that it's not necessarily those who were most physically active during the competition who kept it up six years later.
Example Output: How some 'Biggest Losers' keep the weight off

Example Input: If Berlusconi wins  he is assured of more time in office  even though a razor-thin majority is no guarantee of stability. If he loses  he has to resign -- a move that might lead to early elections.
 Berlusconi has been trying to persuade undecided lawmakers -- drawing accusations of vote-buying and even an investigation by Rome prosecutors. He has rejected any such accusations  but appeared to have succeeded at least with a few lawmakers.
 On Monday  Berlusconi appeared before both houses of parliament to press his case that lawmakers should continue to support his government.
 He insisted that his government had successfully protected Italy from becoming engulfed by the eurozone's debt crisis. He warned they risked plunging Italy into financial instability at a time of crisis if they force him to step down and end Italy's 62nd postwar government.
Example Output: Berlusconi ' s fate lies in hands of swing lawmakers

Example Input: Michael Jackson's mother sued a concert promoter Wednesday alleging the company failed to provide life-saving equipment and oversee a doctor who was hired to protect the pop star's well-being as he prepared for what were intended to be his comeback concerts.
 The suit contends AEG and its agents told Jackson the company would provide the equipment and hire Dr. Conrad Murray to care for Jackson so he could perform at the concerts in London.
 "AEG's representations to Jackson were false because in reality AEG was merely doing whatever it took to make sure that Michael Jackson could make it to rehearsals and shows and AEG did not provide a doctor who was truly looking out for Jackson's well-being and did not provide equipment " the lawsuit states.
 AEG Live President and CEO Randy Phillips said soon after Jackson's death in June 2009 that Murray was enlisted to act as Jackson's personal physician and was to be paid $150 000 a month by AEG Live as the singer prepared for the concerts.
 However  Jackson died before signing the agreement. As a result  Phillips said the agreement was not binding.
 The suit also said AEG Live was responsible for the actions of Murray in the care of Jackson. Murray  however  was not named as a defendant in the lawsuit.
 "At the time of his death  Michael Jackson was under the immediate care of a doctor selected by  hired by  and controlled by AEG; indeed AEG demanded and required that Michael Jackson be treated by this particular doctor to ensure that Michael Jackson would attend all rehearsals and shows on the tour " the complaint states.
 Murray has pleaded not guilty to involuntary manslaughter in Jackson's death at age 50. Police said Murray gave Jackson an overdose of the anesthetic propofol.
 The suit claims Jackson's eldest son  Prince  suffered great trauma and severe emotional distress because he witnessed his father's final moments.
 Despite years of self-imposed exile  he retained a huge  loyal following of fans overjoyed at the prospect of seeing him reclaim the glory he'd attained with albums like "Thriller" and songs like "Beat It!" and "Billie Jean."
Example Output:
Jackson ' s mother sues concert promoter AEG Live