Instructions: 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.
Input: Question: When was the person who composed Anna Kraus born? Passage 1:By the beginning of the 21st century, Information Technology has become one of the most powerful enabler technology and expanded in all fields of science and technology. After completing his education, He changed his research sphere into IT, consequently, he founded the first IT Research Institute in Iran at Tarbiat Modares University. He managed to turn the institute as one of the most significant research center in IT field in Iran. In addition, he founded "Iranian Conference on E-Learning and E-Teaching(ICELET)" accompanied by Dr. Parvin Kadivar (Kharazmi University), Dr. Ahmad Kardan (Amirkabir University of Technology) and Dr. Fattaneh Taghiyareh (University of Tehran) in 2006. The conference is taken into account as the most active conference in IT field in Iran which are held with the presence of fully-fledged professors and researchers from all walks of the world. Moreover, he established The Iranian Association of E-Learning (YADA) with the aid of expertise in 2011 and being elected as the director of the association (2011-2018) for two consecutive periods.
Passage 2:Anna Kraus, Op. 30 is a radio opera in one act by composer Franz Reizenstein. The work uses an English language libretto by Christopher Hassall to tell the tragic tale of a German woman who is forced to leave her country due to oppression from the Nazi regime, as the Nazis did not like her political views. The opera was commissioned by the British Broadcasting Corporation following the popular success of Reizenstein's 1951 cantata Voices of Night. The opera premiered on 25 July 1952 on BBC Third Programme with conductor Norman Del Mar leading the BBC Symphony Orchestra and singers Victoria Sladen (as Anna) and Lloyd Strauss-Smith (as Pavel). It was submitted by the BBC later that year for the Prix Italia. Critical reaction to the work was mixed. The New Statesman described the work as "engaging" and a "worthwhile experiment". The Annual Register wrote that the opera "suffered from the composer's emotion being too closely engaged in the sufferings of the heroine, a refugee from political oppression".
Passage 3:The Basque Country was one of the main sites of battles during the First Carlist War, a civil war between supporters of the Spanish regent Maria Christina, known as liberals, and those of the late king's brother Carlos of Borbon, known as Carlists. The Carlists were particularly focused on capturing Bilbao, a liberal and economic bastion in northern Spain. The Carlist general Tomas de Zumalacarregui tried to take the city during the Siege of Bilbao of 1835, but he was wounded during a battle near Begona and died some time after in the town of Zegama. The next year, the city resisted a second siege during which the liberal general Baldomero Espartero defeated the Carlists in the Battle of Luchana. The city was untouched by the Second Carlist War, which took place mostly in Catalonia, but was again an important scenario during the Third Carlist War; in April 1874 the city suffered a third siege which lasted two months.

Output:
2