The half-century-old Japanese superhero franchise that spawned generations of television series such as the original Gorenger show, whose format was adapted in the United States as the Power Rangers, is drawing to a close, a source familiar with the matter said Thursday.The end of the long-running Super Sentai franchise is attributable in part to inadequate revenues from related events, tie-in goods and movie adaptations when compared with production costs, the source said.The final series in the franchise will be "No. 1 Sentai Gozyuger," which is currently being aired on the TV Asahi netwo…READ FULL ARTICLE