Given the task definition and input, reply with output. In this task, you're given a question, along with three passages, 1, 2, and 3. Your job is to determine which passage can be used to answer the question by searching for further information using terms from the passage. Indicate your choice as 1, 2, or 3.

Question: Who starred in the film considered to be one of the earliest slasher films? Passage 1:Chillag emigrated to Australia after the war, having found no surviving family back in Hungary and being unable to remake the family business following the arrival of communism. Marrying a British-born expatriate in 1950, he worked for the Australian Atomic Energy Commission between 1957 and 1963, living in Sydney. He moved to Leeds, England in 1962, to work in Boston Spa until retirement, whereupon he became a European Information Officer for Leeds Metropolitan University. His daughter, diagnosed with Down syndrome, prompted him to work voluntarily with Mencap, and he continued to give lectures on his experiences at the Imperial War Museum. In 2004, he published his memoirs, The Odyssey of John Chillag, a Hungarian Jew Born in Vienna 2006: From Győr in Hungary to Australia and England Via Auschwitz and Buchenwald.
 Passage 2:His work has proved very influential. Bava directed what is now regarded as the earliest of the Italian giallo films, The Girl Who Knew Too Much (1963) and Blood and Black Lace (1964). His 1965 sci-fi/ horror film Planet of the Vampires was a thematic precursor to Alien (1979). Although comic books had served as the basis for countless serials and children's films in Hollywood, Bava's  (1968) brought an adult perspective to the genre with its' Pop art influence of Andy Warhol and Roy Lichenstein. Many elements of his 1966 film Kill, Baby... Kill!, regarded by Martin Scorsese as Bava's masterpiece, also appear in the Asian strain of terror film known as J-horror. 1971's A Bay of Blood is considered one of the earliest slasher films, and was explicitly imitated in Friday the 13th Part 2.
 Passage 3:A member of the Aspietes family, of noble Armenian origin, Constantine was probably a close relative of his contemporary Michael Aspietes, a distinguished general killed in 1176. Like his relative, Constantine too had earned distinction during Manuel I Komnenos' campaign against the Hungarians in 1167. The historian John Kinnamos records that he held the rank of sebastos. He is next recorded as being active in 1190/1, during the Byzantine efforts to suppress the Bulgarian–Vlach rebellion of the brothers Peter and Ivan Asen. The historian Niketas Choniates records that, in an effort to sustain the troops and bolster their morale, Aspietes decided to distribute to them their delayed annual salaries. This act, however, enraged Emperor Isaac II Angelos, who saw in it almost an attempt to bribe the army to support Aspietes in overthrowing him. The emperor had Aspietes arrested and blinded, after which nothing further is known of him. He possibly died in the early years of the 13th century.
2