Problem: Obi-Wan "Ben" Kenobi is a fictional character in the Star Wars franchise. Within the original trilogy he is portrayed by Alec Guinness, while in the prequel trilogy a younger version of the character is portrayed by Ewan McGregor. In the original trilogy, he is a mentor to Luke Skywalker, to whom he introduces the ways of the Jedi. In the prequel trilogy, he is a master and friend to Anakin Skywalker.

Obi-Wan Kenobi is introduced in the original Star Wars living as the hermit Ben Kenobi on the planet Tatooine. When Luke Skywalker and the droid C-3PO wander off in search of the lost droid R2-D2, Obi-Wan rescues them from a band of native Tusken Raiders. At Obi-Wan's home, R2-D2 plays a recording of Princess Leia saying that R2-D2 contains the plans for the Death Star, the Galactic Empire's superweapon. Leia asks him to deliver the droid and the plans safely to the planet Alderaan in order to help the Rebel Alliance. Obi-Wan reveals his true identity and explains that he is a Jedi Master, a member of an ancient group of warriors that were hunted down and exterminated by his apprentice Darth Vader, the apparent killer of Luke's father. He gives Luke his father's lightsaber and asks him to accompany him to Alderaan and take up Jedi training. Luke declines, but after finding that his uncle Owen and aunt Beru have been killed by Imperial troops, he agrees to go with Obi-Wan to Alderaan and to train as a Jedi. In the spaceport city Mos Eisley, Obi-Wan uses the Force to trick Imperial troops into letting them through a military checkpoint. They enter a local cantina and make a deal with two smugglers, Han Solo and Chewbacca, to fly them to Alderaan aboard their ship, the Millennium Falcon. During the journey, Obi-Wan begins instructing Luke in lightsaber combat. He suddenly becomes weak and tells Luke of "a great disturbance in the Force". Emerging from hyperspace, the party finds that Alderaan has been destroyed by the Empire, and the Falcon is attacked by an Imperial TIE Fighter. The trio chases the TIE fighter to the Death Star, and subsequently get caught in the space station's tractor beam. On board the Death Star, Obi-Wan shuts down the tractor beam, but Darth Vader confronts him and they engage in a lightsaber duel. Obi-Wan uses the duel to distract Vader as Luke, Leia, Han and Chewbacca escape to the Falcon. Although Vader strikes Obi-Wan down, his body mysteriously vanishes the moment he dies. At the climax of the film during the Rebel attack on the Death Star, Obi-Wan speaks to Luke through the Force to help him destroy the Imperial station. In The Empire Strikes Back, Obi-Wan Kenobi appears several times as a spirit through the Force. On the planet Hoth, he appears to instruct Luke to go to the planet Dagobah to find the exiled Jedi Master Yoda. Despite Yoda's skepticism, Obi-Wan convinces his old master to continue Luke's training. He appears later to beseech Luke not to leave Dagobah to try to rescue his friends on Cloud City, although Luke ignores this advice. In Return of the Jedi, Obi-Wan again appears to Luke after Yoda's death on Dagobah. Obi-Wan acknowledges that Darth Vader is indeed Luke's father, revealed by Vader himself in the previous film and confirmed by Yoda on his deathbed, and also reveals that Leia is Luke's twin sister. After the Rebels destroy the second Death Star and defeat the Empire, Obi-Wan appears at the celebration on Endor, alongside the spirits of Yoda and the redeemed Anakin Skywalker (Vader's former Jedi self).

What can he attributed to doing in those appearances?

Answer with quotes: he appears to instruct Luke to go to the planet Dagobah to find the exiled Jedi Master Yoda.

Problem: Cuban was born in Pittsburgh, Pennsylvania. His father, Norton Cuban, was an automobile upholsterer, while Cuban has described his mother, Shirley, as someone with "a different job or different career goal every other week." He grew up in the suburb of Mount Lebanon, in a Jewish working-class family. His paternal grandfather changed the family name from "Chabenisky" to "Cuban" after his family emigrated from Russia through Ellis Island.

On January 4, 2000, Cuban purchased a majority stake in the NBA's Dallas Mavericks for $285 million from H. Ross Perot, Jr. In the 20 years before Cuban bought the team, the Mavericks won only 40% of their games, and a playoff record of 21-32. In the 10 years following, the team won 69 percent of their regular season games and reached the playoffs in each of those seasons except for one. The Mavericks' playoff record with Cuban is 49 wins and 57 losses, including their first trip to the NBA Finals in 2006, where they lost to the Miami Heat. On June 12, 2011, the Mavericks defeated the Heat to win the NBA Finals. Historically, NBA team owners publicly play more passive roles and watch basketball games from skyboxes; Cuban sits alongside fans while donning team jerseys. Cuban travels in his private airplane--a Gulfstream V--to attend road games. In May 2010, H. Ross Perot, Jr., who retained 5% ownership, filed a lawsuit against Cuban, alleging the franchise was insolvent or in imminent danger of insolvency. In June 2010, Cuban responded in a court filing maintaining Perot is wrongly seeking money to offset some $100 million in losses on the Victory Park real estate development. The lawsuit was dismissed in 2011, due in part to Cuban asserting proper management of the team due to its recent victory in the 2011 NBA Finals. In 2014, the 5th Circuit Court affirmed that decision on appeal. Following his initial defeat, Perot attempted to shut out Mavericks fans from use of the parking lots he controlled near the American Airlines Center. In January 2018, Cuban announced the Mavericks would be accepting Bitcoin as payment for tickets in the following season.

Did that pay off?

Answer with quotes:
The Mavericks' playoff record with Cuban is 49 wins and 57 losses, including their first trip to the NBA Finals in 2006,