Question: Junius Richard Jayewardene (Sinhalese: juniys ricdd jyvrdhn,Tamil: juunnniys ricctt jyvrtnnnaa; 17 September 1906 - 1 November 1996), commonly abbreviated in Sri Lanka as J. R., was the leader of Sri Lanka from 1977 to 1989, serving as Prime Minister from 1977 to 1978 and as the second President of Sri Lanka from 1978 till 1989. He was a leader of the nationalist movement in Ceylon (now Sri Lanka) who served in a variety of cabinet positions in the decades following independence.

On the economic front, Jayewardene's legacy was decisive. For thirty years after independence, Sri Lanka had struggled in vain with slow growth and high unemployment. Since Jayewardene's reforms, the island has maintained healthy growth despite the civil war. On the ethnic question, Jayewardene's legacy is bitterly divisive. When he took office, ethnic tensions were present but the country as a whole was at peace. By the end of his tenure, Sri Lanka was facing not one but two civil wars, both featuring unprecedented levels of violence and brutality. Though Jayewardene indeed did not take measures to stop the attack on Tamils, he was not opposed to them personally, only politically. One of his most esteemed friends was a supreme court judge of Tamil ethnicity, a member of an elite family and raised in Colombo, but who was strongly linked to his Jaffna Tamil heritage. This is but one close Tamil friend of the president's, and it is quite clear that he was not a racist but rather a man who knew how to exploit racism to win the majority. Highly respected in Japan for his call for peace and reconciliation with post-war Japan at the Peace Conference in San Francisco in 1951, a statue of Jayewardene was erected at the Kamakura Temple in the Kanagawa Prefecture in Japan in his honor. In 1988, the J.R Jayewardene Centre was established by the J.R Jayewardene Centre Act No. 77 of 1988 by Parliament at the childhood home of J. R. Jayewardene Dharmapala Mawatha, Colombo. It serves as archive for J.R Jayewardene's personal library and papers as well as papers, records from the Presidential Secretariat and gifts he received in his tenure as President.

Using a quote from the above article, answer the following question: What else did he leave behind?
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Answer: On the ethnic question, Jayewardene's legacy is bitterly divisive.

Question: Lee de Forest was born in 1873 in Council Bluffs, Iowa, the son of Anna Margaret (nee Robbins) and Henry Swift DeForest. He was a direct descendant of Jesse de Forest, the leader of a group of Walloon Huguenots who fled Europe in the 17th Century due to religious persecution. De Forest's father was a Congregational Church minister who hoped his son would also become a pastor. In 1879 the elder de Forest became president of the American Missionary Association's Talladega College in Talladega, Alabama, a school "open to all of either sex, without regard to sect, race, or color", and which educated primarily African-Americans.

At the 1904 Louisiana Purchase Exposition, Valdemar Poulsen had presented a paper on an arc transmitter, which unlike the discontinuous pulses produced by spark transmitters, created steady "continuous wave" signals that could be used for amplitude modulated (AM) audio transmissions. Although Poulsen had patented his invention, de Forest claimed to have come up with a variation that allowed him to avoid infringing on Poulsen's work. Using his "sparkless" arc transmitter, de Forest first transmitted audio across a lab room on December 31, 1906, and by February was making experimental transmissions, including music produced by Thaddeus Cahill's telharmonium, that were heard throughout the city. On July 18, 1907, de Forest made the first ship-to-shore transmissions by radiotelephone -- race reports for the Annual Inter-Lakes Yachting Association (I-LYA) Regatta held on Lake Erie -- which were sent from the steam yacht Thelma to his assistant, Frank E. Butler, located in the Fox's Dock Pavilion on South Bass Island. De Forest also interested the U.S. Navy in his radiotelephone, which placed a rush order to have 26 arc sets installed for its Great White Fleet around-the-world voyage that began in late 1907. However, at the conclusion of the circumnavigation the sets were declared to be too unreliable to meet the Navy's needs and removed. The company set up a network of radiotelephone stations along the Atlantic coast and the Great Lakes, for coastal ship navigation. However, the installations proved unprofitable, and by 1911 the parent company and its subsidiaries were on the brink of bankruptcy.

Using a quote from the above article, answer the following question: did they use the technology for anything else ?
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Answer:
De Forest also interested the U.S. Navy in his radiotelephone,