Task: Question Answering
Input (English): Passage: The siege was captured by Pathé News cameras—one of their earliest stories and the first siege to be captured on film—and it included footage of Churchill in attendance. When the newsreels were screened in cinemas, Churchill was booed with shouts of "shoot him" from audiences. His presence was controversial to many and the Leader of the Opposition, Arthur Balfour, remarked, "He [Churchill] was, I understand, in military phrase, in what is known as the zone of fire—he and a photographer were both risking valuable lives. I understand what the photographer was doing, but what was the right hon. Gentleman doing? That I neither understood at the time, nor do I understand now." Jenkins suggests that he went simply because "he could not resist going to see the fun himself".An inquest was held in January into the deaths at Houndsditch and Sidney Street. The jury took fifteen minutes to reach the conclusion that the two bodies located were those of Svaars and Sokoloff, and that Tucker, Bentley and Choate had been murdered by Gardstein and others in the course of the burglary attempt. Rosen was arrested on 2 February at work in Well Street, Hackney, and Hoffman was taken into custody on 15 February. The committal proceedings spread from December 1910—with Milstein and Trassjonsky appearing—to March 1911, and included Hoffman from 15 February. The proceedings consisted of 24 individual hearings. In February Milstein was discharged on the basis that there was insufficient evidence against her; Hoffman, Trassjonsky and Federoff were released in March on the same basis.The case against the four remaining arrested gang members was heard at the Old Bailey by Mr Justice Grantham in May. Dubof and Peters were accused of Tucker's murder, Dubof, Peters, Rosen and Vassilleva were charged with "feloniously harbouring a felon guilty of murder", and for "conspiring and agreeing together and with others unknown to break and enter the shop of Henry Samuel Harris with intent to steal his goods." The case lasted for eleven days; there were problems with the proceedings because of the language difficulties and the chaotic personal lives of the accused. The case resulted in acquittals for all except Vassilleva, who was convicted of conspiracy in the burglary. She was sentenced to two years' imprisonment; her conviction was later overturned on appeal.After the high levels of criticism aimed at the Aliens Act, Churchill decided to strengthen the legislation, and proposed the Aliens (Prevention of Crime) Bill under the Ten Minute Rule. The MP Josiah C Wedgwood objected, and wrote to Churchill to ask him not to introduce the hard-line measures "You know as well as I do that human life does not matter a rap in comparison with the death of ideas and the betrayal of English traditions." The bill did not become law. 
Question: What is the last name of the person that was initially sentenced to two years in prison?
Output (English): Vassilleva.