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: Why did the Nok culture die off about 200 AD on the Jos Plateau? Passage:The Nok culture thrived from approximately 1,500 BC to about 200 AD on the Jos Plateau in north and central Nigeria and produced life-sized terracotta figures that include human heads, human figures, and animals. Iron smelting furnaces at Taruga, a Nok site, date from around 600 BC. The Nok culture is thought to have begun smelting iron by 600-500 BC and possibly some centuries earlier. Kainji Dam excavations revealed iron-working by the 2nd century BC. Evidence of iron smelting has also been excavated at sites in the Nsukka region of southeast Nigeria in what is now Igboland: dating to 2,000 BC at the site of Lejja (Uzomaka 2009) and to 750 BC and at the site of Opi (Holl 2009). The transition from Neolithic times to the Iron Age apparently was achieved indigenously without intermediate bronze production. Others have suggested that the technology moved west from the Nile Valley, although the Iron Age in the Niger River valley and the forest region appears to predate the introduction of metallurgy in the upper savanna by more than 800 years. The earliest iron technology in West Africa has also been found to be contemporary with or predate that of the Nile valley and North Africa, and some archaeologists believe that iron metallurgy was likely developed independently in sub-Saharan West Africa.

answer:
b


question:
Question: When was the university founded that Van Houwelingen applied to in June 1962? Passage:Van Houwelingen applied at the Utrecht University in June 1962 majoring in Chemistry and obtaining an Bachelor of Science degree in July 1964. Van Houwelingen served in the Royal Netherlands Army as a second lieutenant from November 1964 until November 1966. Van Houwelingen worked as a chemist and researcher in the private sector from November 1962 until March 1973. Van Houwelingen served on the Municipal Council of Leerdam from April 1968 until June 1974 and served on the Provincial-Council of Utrecht from June 1970 until June 1974. Van Houwelingen became a Member of the House of Representatives after the resignation of Barend Biesheuvel, taking office on 7 March 1973. After the election of 1977 the Christian Democratic Appeal and the People's Party for Freedom and Democracy (VVD) formed the Cabinet Van Agt-Wiegel, Van Houwelingen and several Christian Democratic Appeal Members of the House of Representatives were critical on the coalition agreement and formed an informal caucus in their own parliamentary group called the  that followed the cabinet critically throughout the entire period. After the election of 1981 Van Houwelingen was appointed as State Secretary for Defence in the Cabinet Van Agt II, taking office on 14 September 1981. The Cabinet Van Agt II fell just seven months into its term on 12 May 1982 and continued to serve in a demissionary capacity until it was replaced by the caretaker Cabinet Van Agt III with Van Houwelingen continuing as State Secretary for Defence, taking office on 29 May 1982. After the election of 1982 Van Houwelingen returned as a Member of the House of Representatives, taking office on 16 September 1982. Following the cabinet formation of 1982 Van Houwelingen continued as State Secretary for Defence in the Cabinet Lubbers I, taking office on 4 November 1982. After the election of 1986 Van Houwelingen again returned as a Member of the House of Representatives, taking office on 3 June 1986. Following the cabinet formation of 1986 Van Houwelingen remained as State Secretary for Defence in the Cabinet Lubbers II, taking office on 14 July 1986. After the election of 1989 Van Houwelingen once again returned as a Member of the House of Representatives, taking office on 14 September 1989. Following the cabinet formation of 1989 Van Houwelingen was not giving a cabinet post in the new cabinet, the Cabinet Lubbers II was replaced by the Cabinet Lubbers III on 7 November 1989 and he continued to serve in the House of Representatives as a frontbencher chairing several . In December 1993 Van Houwelingen announced that he wouldn't not stand for the election of 1994 and continued to serve until the end of the parliamentary term on 17 May 1994. In May 1994 Van Houwelingen was nominated as Mayor of Haarlemmermeer, serving from 1 June 1994 until 1 January 2003.

answer:
b


question:
Question: Which of the two main Islands of Fiji is largest? Passage:A distinction is often made between the island of New Guinea and what is known as Island Melanesia, which consists of "the chain of archipelagos, islands, atolls, and reefs forming the outer bounds of the sheltered oval-shaped coral sea". This includes the Louisiade archipelago (part of Papua New Guinea), the Bismarck Archipelago (part of Papua New Guinea and Solomon Islands), and the Santa Cruz Islands (part of the country called Solomon Islands). The country of Vanuatu is composed of the New Hebrides island chain (and in the past 'New Hebrides' has also been the name of the political unit located on the islands). New Caledonia is composed of one large island and several smaller chains, including the Loyalty Islands. The nation of Fiji is composed of two main islands, Viti Levu and Vanua Levu, and smaller islands, including the Lau Islands.

answer:

b