Task: Question Answering
Input (English): Passage: In 1918, while teaching in Geneva, Szigeti met and fell in love with Wanda Ostrowska. She was born in Russia and had been stranded by the Russian Revolution of 1917 with her sister at a finishing school in Geneva. In 1919, Szigeti and Ostrowska decided to get married, but due to the turbulent political situation in Europe, many unexpected bureaucratic obstacles were thrown up in their path. The first problem was the impossibility of contacting Ostrowska's family, and the couple were forced to go ahead without parental consent, with the permission only of Ostrowska's sister and the headmistress of the finishing school. Further bureaucratic entanglements threatened the young couple's hopes, but eventually the officials responsible granted them a dispensation to marry. Szigeti recalls in his memoirs the words of Consul General Baron de Montlong at the critical moment: Let us not, if we can avoid it, fall victim to the dead letter of the law. I don't want to postpone the happiness of these two youngsters if we can help it. All laws have been twisted and tortured out of semblance of law, what with war and revolutions. For once let's twist and turn one for a good cause, yes?
Just before the birth of their only child, daughter Irene, Szigeti found himself stuck in Berlin during the Kapp Putsch of 1920, unable to return to Geneva. The entire city had been paralyzed by a general strike, and the trains were not running. His scheduled concert could not go on as planned, but he was forced to stay in Berlin for "interminable days" while the Putsch ran its course. Szigeti writes: "... the impossibility of communicating by phone or wire with my wife--whose condition I pictured with the somewhat lurid pessimism usual to young prospective fathers--was certainly a greater torment to me than all the other discomforts put together".
By 1940, the outbreak of World War II forced the Szigetis to leave Europe for the United States. (Irene remained in Switzerland, having married pianist Nikita Magaloff earlier that year.) They settled in California, where Wanda, always fond of nature, was delighted to be able to raise her own garden. In a letter to a friend, Szigeti describes their California life: Wanda is happy, doing wonders with her gardening, chicken and rabbit raising, preserve and pâté de foie making. She doesn't budge from our place, doesn't want to come back to New York even for a visit, which I, for one, can well understand! Two dogs, an aviary full of exotic birds, tomatoes, grapes, strawberries, asparagus, artichokes, lovely flowers (camellias too!), right in our own little world. 
Question: What is the name of the person whose scheduled concert could not go on as planned due to the paralysis of Berlin stemming from the Kapp Putsch of 1920?
Output (English): Szigeti.