Question: "Two Swords" is the first episdoe of a televsion series duing season that concluded on what date?

full_context: Document 1: High Sparrow (Game of Thrones): "High Sparrow" is the third episode of the fifth season of HBO's fantasy television series "Game of Thrones", and the 43rd overall. The episode was written by series co-creators David Benioff and D. B. Weiss, and directed by Mark Mylod, his directorial debut for the series. It aired on April 26, 2015. Prior to airing, this episode along with the other first four episodes of the season were leaked online.
Document 2: The Walking Dead (season 4): The fourth season of "The Walking Dead", an American post-apocalyptic horror television series on AMC, premiered on October 13, 2013, and concluded on March 30, 2014, consisting of 16 episodes. Developed for television by Frank Darabont, the series is based on the eponymous series of comic books by Robert Kirkman, Tony Moore, and Charlie Adlard. It was executive produced by Kirkman, David Alpert, Scott M. Gimple, Greg Nicotero, Tom Luse, and Gale Anne Hurd, with Gimple assuming the role of showrunner after Glen Mazzara's departure from the series. The fourth season was well received by critics. It was nominated for multiple awards and won three, including Best Syndicated/Cable Television Series for the second consecutive year, at the 40th Saturn Awards.
Document 3: Game of Thrones (season 2): The second season of the fantasy drama television series "Game of Thrones" premiered in the United States on HBO on April 1, 2012, and concluded on June 3, 2012. It was broadcast on Sunday at 9:00 pm in the United States, consisting of 10 episodes, each running approximately 50–60 minutes. The season mostly covers the events of "A Clash of Kings", the second novel of the "A Song of Ice and Fire" series by George R. R. Martin, adapted for television by David Benioff and D. B. Weiss. HBO ordered the second season on April 19, 2011, which began filming in July 2011, primarily in Ireland, Northern Ireland, Croatia and Iceland.
Document 4: Game of Thrones: Season 4 (soundtrack): The soundtrack album of the fourth season of HBO series "Game of Thrones", titled Game of Thrones: Season 4 was released digitally on June 10, 2014, and on CD on July 1, 2014. Season 4 of "Game of Thrones" saw the Icelandic band Sigur Rós perform their rendition of "" in a cameo appearance at King Joffrey's wedding in the second episode, "The Lion and the Rose".
Document 5: Game of Thrones (season 3): The third season of the fantasy drama television series "Game of Thrones" premiered in the United States on HBO on March 31, 2013, and concluded on June 9, 2013. It was broadcast on Sunday at 9:00 pm in the United States, consisting of 10 episodes, each running approximately 50–60 minutes. The season is based roughly on the first half of "A Storm of Swords" (the third of the "A Song of Ice and Fire" novels by George R. R. Martin, of which the series is an adaptation). The series is adapted for television by David Benioff and D. B. Weiss. HBO renewed the series for a third season on April 10, 2012, nine days after the second season's premiere. Production began in July 2012. The show was filmed primarily in Ireland, Northern Ireland, Croatia, Iceland and Morocco.
Document 6: Empire (season 4): The fourth season of the American television drama series "Empire" premiered on September 27, 2017, in the United States on Fox. The fourth season was ordered on January 11, 2017, consisting of eighteen episodes. The show is produced by 20th Century Fox, in association with Imagine Entertainment, Lee Daniels Entertainment, Danny Strong Productions and Little Chicken Inc. The showrunners for this season are Ilene Chaiken, Danny Strong and Lee Daniels. The season will air on Wednesday at 8:00 pm, a new slot. The premiere of the season will also crossover with "Star".
Document 7: Game of Thrones (season 1): The first season of the fantasy drama television series "Game of Thrones" premiered on HBO on April 17, 2011, at 9.00 pm in the U.S., and concluded on June 19, 2011. It consists of ten episodes, each of approximately 55 minutes. The series is based on "A Game of Thrones", the first novel in the "A Song of Ice and Fire" series by George R. R. Martin, adapted for television by David Benioff and D. B. Weiss. HBO had ordered a television pilot in November 2008; filming began the following year. However, it was deemed unsatisfactory and later reshot with some roles being recast. In March 2010, HBO ordered the first season, which began filming in July 2010, primarily in Belfast, Northern Ireland, with additional filming in Malta.
Document 8: Stormborn: "Stormborn" is the second episode of the seventh season of HBO's fantasy television series "Game of Thrones", and the 62nd overall. The episode was written by Bryan Cogman, and directed by Mark Mylod. The title of the episode refers to both Daenerys Targaryen, who was born during a terrible storm, and Euron Greyjoy, who declares himself to be "the storm".
Document 9: Game of Thrones (season 6): The sixth season of the fantasy drama television series "Game of Thrones" premiered on HBO on April 24, 2016, and concluded on June 26, 2016. It consists of ten episodes, each of approximately 50–60 minutes, largely of original content not found in George R. R. Martin's "A Song of Ice and Fire" series. Some story elements were derived from the novels and from information Martin revealed to the show-runners. The series was adapted for television by David Benioff and D. B. Weiss. HBO ordered the season on April 8, 2014, together with the fifth season, which began filming in July 2015 primarily in Northern Ireland, Spain, Croatia, Iceland and Canada. Each episode cost over $10 million.
Document 10: Gossip Girl (season 4): The fourth season of "Gossip Girl", an American teen drama, consisted of 22 episodes which aired between September 13, 2010 and May 16, 2011. The series was based upon the book series by Cecily von Ziegesar and developed for television by Josh Schwartz and Stephanie Savage. The CW renewed the series for a full fourth season on February 16, 2010. Blake Lively, Leighton Meester, Penn Badgley, Chace Crawford, Taylor Momsen, Ed Westwick, Jessica Szohr, Kelly Rutherford, and Matthew Settle all return as series regulars.
Document 11: Two Swords (Game of Thrones): "Two Swords" is the first episode of the fourth season of HBO's fantasy television series "Game of Thrones", and the 31st overall. The episode was written by series co-creators and showrunners David Benioff and D. B. Weiss, and directed by Weiss. It premiered on April 6, 2014.
Document 12: Cripples, Bastards, and Broken Things: "Cripples, Bastards, and Broken Things" is the fourth episode of the HBO medieval fantasy television series "Game of Thrones", which first aired on May 8, 2011. It was written by Bryan Cogman and directed by Brian Kirk. In this episode Lord Eddard Stark, the new Hand of the King, investigates the sudden death of his predecessor. Jon Snow, Eddard's bastard son, defends a new recruit who has just joined the rangers at "the Wall." Exiled prince Viserys becomes increasingly frustrated as the Dothraki horde he needs to invade Westeros and win back his crown continues to linger at Vaes Dothrak. The episode ends with Eddard's wife Catelyn arresting Tyrion Lannister on suspicion of attempting to murder her son Bran.
Document 13: Supernatural (season 4): The fourth season of "Supernatural", an American fantasy horror television series created by Eric Kripke, premiered September 18, 2008, and concluded on May 14, 2009, on The CW.
Document 14: Game of Thrones (season 4): The fourth season of the fantasy drama television series "Game of Thrones" premiered in the United States on HBO on April 6, 2014, and concluded on June 15, 2014. It was broadcast on Sunday at 9:00 pm in the United States, consisting of 10 episodes, each running approximately 50–60 minutes. The season is adapted primarily from the second half of "A Storm of Swords", along with elements of "A Feast for Crows" and "A Dance with Dragons", all novels from the "A Song of Ice and Fire" series by George R. R. Martin. The series is adapted for television by David Benioff and D. B. Weiss. HBO ordered the fourth season on April 2, 2013, which began filming in July 2013. The season was filmed primarily in Ireland, Northern Ireland and Croatia.
Document 15: Game of Thrones: Game of Thrones is an American fantasy drama television series created by David Benioff and D. B. Weiss. It is an adaptation of "A Song of Ice and Fire", George R. R. Martin's series of fantasy novels, the first of which is "A Game of Thrones". It is filmed in Belfast and elsewhere in the United Kingdom, Canada, Croatia, Iceland, Malta, Morocco, Spain, and the United States. The series premiered on HBO in the United States on April 17, 2011, and its seventh season ended on August 27, 2017. The series will conclude with its eighth season in 2018 or 2019.
ground_truth: June 15, 2014