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: What is the birth year of the man whose works Dulfu's thesis dealt with? Passage 1:Born in Tohat, Maramures County, his parents were Nichifor Dulfu and his wife Agapia (nee Bran), members of the rural intellectual class. From early childhood, his mother inspired a love of stories in him. He attended Hungarian-language primary school and gymnasium in Baia Mare from 1864 to 1871, earning top marks, and went to high school in the same town from 1872. In 1876, he graduated from high school in Cluj, where he studied for two years. He attended Franz Joseph University in the latter city, earning a doctorate in philosophy in 1881. His thesis, written in Hungarian, dealt with the work of Vasile Alecsandri, surveyed the Romanian literary context and included a dozen poems translated by Dulfu. After graduation, he moved to the Romanian Old Kingdom and worked as a teacher. After a brief stint in the capital Bucharest, he directed and taught at a school in Turnu Severin for the 1881-1882 year. Beginning in 1882, he again taught philosophy and later Romanian in Bucharest; one of the two schools where he worked was for girls. He came to know faculty colleague Ioan Slavici, as well as Mihail Eminescu, Alexandru Vlahuta and Bogdan Petriceicu Hasdeu. In 1886, he married Elena Mateescu, with whom he had four children and who encouraged his work as a writer. He obtained Romanian citizenship in 1891. During World War I, he worked as a postal censor in the temporary capital of Iasi, where an illness claimed one of his daughters. Although normally a disciplined teacher, he lost his composure on December 1, 1918, the day the union of Transylvania with Romania was proclaimed; cutting short the lesson and visibly moved, he explained the significance of the event to his pupils. In 1921, he retired from the girls' school, as the pupils daily reminded him of his deceased daughter.
Passage 2:Born in Philadelphia and raised in Chicago, Diehl attended MacMurray College in Illinois for two years, after which she married a graduate student at Yale University (since divorced) and moved to New Haven, Connecticut. She returned to Chicago in the early 1970s and began painting among a group of women artists, including Barbara Blades, Liz Langer, Sandra Perlow and Fern Shaffer, studying at the Evanston Art Center with artist Corey Postiglione. Diehl was soon active in the art scene that flourished in Chicago, exhibiting her work at galleries such as Richard Gray, Michael Wyman, Jan Cicero, and N.A.M.E. Gallery, and writing articles and reviews for the New Art Examiner, where she became Managing Editor. She had her first individual exhibition at Roy Boyd Gallery in 1980. During this time, her work was reviewed in the New Art Examiner, the Chicago Sun-Times, the Chicago Tribune, and the Chicago Daily News. In 1976, Diehl moved to New York to work as assistant to John Coplans, then editor of Artforum magazine.
Passage 3:Born in Hirschberg on the Saale in the Principality of Reuss-Gera, Germany, Mutschmann moved while he was young with his family to Plauen in Saxony. He served an apprenticeship as an embroiderer and from 1896 to 1901 was employed as a master embroiderer, department head and warehouse director in lace and linen factories in Plauen, Herford and Koln. This was followed by military service from 1901-1903, after which he returned to employment in the Plauen Lace Factyory (Plauener Spitzenfabriken). He established his own lace factory, Mutschmann & Eisentraut, in Plauen in October 1907. During World War I, he served on the Western Front until he was severely wounded in April 1916. He was discharged from the Army as unfit for field service on 24 December 1916, then resuming the direction of his factory in Plauen. After the war, he was an early participant in the nationalist and anti-semitic Deutschvolkischer Schutz und Trutzbund. He was a founding member of the local branch (Ortsgruppe) of the National Socialist German Workers Party (NSDAP) in Plauen and made personal donations of capital to the Nazi Party.
1