Question: How many years after the acoustic press were shellac discs invented? Passage 1:The first complete Tosca recording was made in 1918, using the acoustic process. The conductor, Carlo Sabajno, had been the Gramophone Company's house conductor since 1904; he had made early complete recordings of several operas, including Verdi's La traviata and Rigoletto, before tackling Tosca with a largely unknown cast, featuring the Italian soprano Lya Remondini in the title role. The next year, in 1919, Sabajno recorded Tosca again, this time with more well-known singers, including Valentina Bartolomasi and Attilio Salvaneschi as Tosca and Cavaradossi. Ten years later, in 1929, Sabajno returned to the opera for the third time, recording it, by the electrical process, with the orchestra and chorus of the Teatro alla Scala and with stars Carmen Melis and Apollo Granforte in the roles of Tosca and Scarpia. In 1938 HMV secured the services of the renowned tenor Beniamino Gigli, together with the soprano Maria Caniglia as Tosca and conductor Oliviero De Fabritiis, for a "practically complete" recording that extended over 14 double-sided shellac discs.
 Passage 2:John Norman "Jock" Nelson (28 May 1908 – 20 June 1991) was an Australian politician. Born in Bundaberg, Queensland, he was the son of politician Harold Nelson. Jock Nelson was educated at state schools in Darwin before becoming a jackeroo and goldminer, and later a bore contractor at Alice Springs. After serving in the military from 1942 to 1945, he became a pastoralist. In 1949, he was elected to the Australian House of Representatives as the Labor member for Northern Territory, defeating the sitting independent, Adair Blain. At this time, the member for Northern Territory could only vote on matters relating to the Territory itself. In 1963, he was re-elected unopposed, the last occasion when a member was returned to the House of Representatives in this fashion. He retired in 1966, an occasion used by the Country Party to take the seat. Nelson returned to pastoralism and served as the first Mayor of Alice Springs (1971 - 1973) before he stepped down to become the Administrator of the Northern Territory (1973–1975) before his death in 1991.
 Passage 3:Jean-Baptiste Bienvenu Martin (22 July 1847 – 10 December 1943) was a French Radical leader and cabinet officer. He was born at Saint-Bris-le-Vineux (Yonne), and was educated in the law. He held an underprefecture, entered the Council of State, and in 1894 became director under the Minister of the Colonies. He was an unsuccessful senatorial candidate for Yonne in 1897, was elected deputy for Auxerre in that year, was reelected in 1898 and 1902, and in 1905 became Senator for Yonne. In the Chamber he supported the Waldeck-Rousseau and the Combes ministries, and advocated the separation of church and state. In 1904 he organized the new Radical group of the Left. In 1905-06 he held the portfolio of Public Instruction in the Rouvier cabinet; he was Minister of Justice in the Doumergue cabinet in 1913-14, and in the first cabinet organized by René Viviani in June, 1914; and when the War in Europe broke out in 1914, he became Minister of Labor in the second Viviani cabinet, formed August 26 of that year.

Output: 1