instruction:
In this task, you're given a question, along with a context passage. The passage will not have a direct answer to the question, but can include some information and a clue for the answer. Assuming you can only obtain information about one entity in the passage, your job is to determine whether information from the passage can be used to answer the question. Indicate your choice as `a` for Yes or `b` for No.
question:
Question: Who was the last leader of the the country that was established after the year-long siege in 831? Passage:At the time of his accession, Theophilos was obliged to wage wars against the Arabs on two fronts. Sicily was once again invaded by the Arabs, who took Palermo after a year-long siege in 831, established the Emirate of Sicily, and gradually continued to expand across the island. The defence after the invasion of Anatolia by the Abbasid Caliph Al-Ma'mun in 830 was led by the Emperor himself, but the Byzantines were defeated and lost several fortresses. In 831 Theophilos retaliated by leading a large army into Cilicia and capturing Tarsus. The Emperor returned to Constantinople in triumph, but in the autumn he was defeated in Cappadocia. Another defeat in the same province in 833 forced Theophilos to sue for peace (Theophilos offered 100,000 gold dinars and the return of 7,000 prisoners), which he obtained the next year, after the death of Al-Ma'mun.

answer:
b


question:
Question: How many years did the person who possibly encouraged Eumenes to revolt reign? Passage:Although nominally under Seleucid control, Pergamon under Philetaerus enjoyed considerable autonomy. However, upon his succession, Eumenes, perhaps with the encouragement of Ptolemy II, who was at war with the Seleucids, revolted, defeating the Seleucid king Antiochus I near the Lydian capital of Sardis in 261 BC. He was thus able to free Pergamon, and greatly increase the territories under his control. In his new possessions, he established garrison posts in the north at the foot of Mount Ida called Philetaireia after his adoptive father, and in the east, northeast of Thyatira near the sources of the river Lycus, called Attaleia after his grandfather, and he extended his control south of the river Caïcus to the Gulf of Cyme as well. Demonstrating his independence, he began to strike coins with the portrait of Philetaerus, while his predecessor had still depicted Seleucus I Nicator.

answer:
b


question:
Question: How many students were enrolled at Institut National Agronomique Paris-Grignon the year that Houellebecq began attending? Passage:Houellebecq was born in 1956 on the French island of Réunion, the son of Lucie Ceccaldi, a French doctor born in Algeria of Corsican descent, and René Thomas, a ski instructor and mountain guide. He lived in Algeria from the age of five months until 1961, with his maternal grandmother. In a lengthy autobiographical article published on his website (now defunct), he states that his parents "lost interest in [his] existence pretty quickly", and at the age of six, he was sent to France to live with his paternal grandmother, a communist, while his mother left to live a hippie lifestyle in Brazil with her recent boyfriend. His grandmother's maiden name was Houellebecq, which he took as his pen name. Later, he went to Lycée Henri Moissan, a high school at Meaux in the north-east of Paris, as a boarder. He then went to Lycée Chaptal in Paris to follow preparation courses in order to qualify for grandes écoles (elite schools). He began attending the Institut National Agronomique Paris-Grignon in 1975. He started a literary review called Karamazov (named after Fyodor Dostoevsky's last novel) and wrote poetry.

answer:

a