instruction:
In this task, you're given a passage, further information available on a particular linked term from the statement, and a question. Your job is to generate the answer to the question by using the information provided. If there is no clear answer obtainable, output 'none'.
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Passage: The SaGa series was created by game designer Akitoshi Kawazu, whose credits prior to the franchise's introduction include Final Fantasy and Final Fantasy II. At a time when Nintendo's Game Boy was becoming popular worldwide due to the puzzle game Tetris, then-Square president Masashi Miyamoto requested that a development team create a game for the handheld console. Kawazu and fellow designer Koichi Ishii suggested that the company develop a role-playing video game, thus making Makai Tōshi Sa·Ga, later released in North America as The Final Fantasy Legend, the company's first handheld title. The gameplay was designed to be difficult, described by Kawazu as the main difference between the SaGa and Final Fantasy series. The character illustrations in all the games in the SaGa series were done by Tomomi Kobayashi, who has also done the illustrations for the MMORPG Granado Espada. Although the series has been long-running, as of 2008 none of the ten production teams at Square Enix is assigned to the franchise. Akitoshi Kawazu and Production Team 2 are devoted to the Final Fantasy Crystal Chronicles series.
 Link Information: none Question: When did Kawazu's fellow designer on Makai Toshi Sa-Ga begin working at Square?
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Answer: none


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Passage: The NASL first staged an indoor tournament in 1971 at the St. Louis Arena with a $2,800 purse. After a couple of years of experimenting, including a three-city tour by the Red Army team from Moscow in 1974, the league again staged tournaments in 1975 and 1976. For many years Tampa Bay owner George W. Strawbridge, Jr. lobbied his fellow owners to start up a winter indoor season, but was always stone-walled. For several years, his Rowdies and several other teams used winter indoor "friendlies" as part of their training and build-up to the outdoor season. In the meantime, pressed by the rival Major Indoor Soccer League (MISL), which inaugurated play in 1978, two-day mini-tournaments like the Skelly Invitational and the NASL Budweiser Invitational were held with varying degrees of success. The NASL finally started a full indoor league schedule, a 12-game season with 10 teams, in 1979–80. For the 1980–81 season, the number of teams playing indoor soccer increased to 19 and the schedule grew to 18 games. The schedule remained at 18 games, but the teams participating decreased to 13 for the 1981–82 season. The league canceled the 1982–83 indoor season and three teams (Chicago, Golden Bay, and San Diego) played in the MISL for that season. Four other teams (Fort Lauderdale, Montreal, Tampa Bay and Tulsa) competed in a short NASL Grand Prix of Indoor Soccer Tournament in early 1983. The NASL indoor season returned for 1983–84 with only seven teams but a 32-game schedule.
 Link Information: the Dallas Tornado were crowned the NASL's professional hoc-soc champions. Question: Who won the $2,800 at the 1971 NASL tournament?
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Answer: Dallas and Rochester


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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.
 Link Information: The Nok Culture appeared in northern Nigeria around 150 Question: Why did the Nok culture die off about 200 AD on the Jos Plateau?
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Answer: unknown