Question: Are Heinrich Greinacher and P. K. Page of the same nationality?

<P0-S0> " P. K." Page,( 23 November 1916 – 14 January 2010) was best known as a Canadian poet, though the citation as she was inducted as a Fellow of the Royal Society of Canada reads" poet, novelist, script writer, playwright, essayist, journalist, librettist, teacher and artist." <P0-S1> Patricia Kathleen <P0-S2> She was the author of more than thirty published books that include poetry, fiction, travel diaries, essays, children's books, and an autobiography. <P0-S3> As a visual artist, she exhibited her work as P.K. Irwin at a number of venues in Canada and abroad. <P0-S4> Her works are in the permanent collections of the National Gallery of Canada the Art Gallery of Ontario and the Burnaby Art Gallery <P0-S5> By special resolution of the United Nations, in 2001 Page's poem" Planet Earth" was read simultaneously in New York, the Antarctic, and the South Pacific to celebrate the International Year of Dialogue Among Civilizations. <SEP> <P1-S0> Heinrich Greinacher( May 31, 1880 in St. Gallen – April 17, 1974 in Bern) was a Swiss physicist. <P1-S1> He is regarded as an original experimenter and is the developer of the magnetron and the Greinacher multiplier. <P1-S2> Greinacher was the only child of master shoemaker Heinrich Greinacher and his wife Pauline, born Münzenmayer. <P1-S3> He went to school in St. Gallen and studied physics at both Zurich, Geneva and Berlin. <P1-S4> He also trained as a pianist at the Geneva Conservatory of Music. <P1-S5> In Berlin, Greinacher attended the lectures of Max Planck and received a doctorate in 1904 under Emil Warburg. <P1-S6> He did his habilitation in 1907 at the University of Zurich, and in 1912, he moved to Zurich on a permanent basis. <P1-S7> From 1924 to 1952, he was full professor of Experimental Physics at the University of Bern and the director of the Physical Institute( formerly Physics" Cabinett"). <P1-S8> In 1912, Greinacher developed the magnetron and gave a fundamental mathematical description of this tube. <P1-S9> In 1914, he invented the Greinacher multiplier( a rectifier circuit for voltage doubling). <P1-S10> Originally a German citizen, he was naturalized in 1894 as a Swiss citizen. <P1-S11> In 1920, he generalized this idea to a cascaded voltage multiplier, and developed detection methods for charged particles( proportional counter, spark counter). <P1-S12> In the 1930s, using an independently invented Greinacher- style multiplier to research atomic nuclei, British researchers discovered artificial radioactivity. <P1-S13> Greinacher was married twice: in 1910 to the German Marie Mahlmann, with whom he had two children, and then again in 1933 to Frieda Urben from Inkwil. <SEP> <P2-S0> Anne Cochran Wilkinson (September 21, 1910 – May 10, 1961) was a Canadian poet. <P2-S1> She was part of the modernist movement in Canadian poetry in the 1940s and 1950s, one of only a few prominent women poets of the time, along with Dorothy Livesay and P. K. Page. <SEP> <P3-S0> Aurora Robles( born 1980 in Matamoros, Tamaulipas, Mexico) is a Mexican fashion model. <P3-S1> Robles has appeared in many top quality fashion shows in Mexico and Europe. <P3-S2> She has been featured on the front pages of the April 2000 and December 2000 issues of the magazine" Max", in Germany, the front page of the May 2002 issue of GQ in Germany, and the front page of the July/ August 2000 issue of Gear.