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.

[EX Q]: Question: How many players did Maryland Mania have when Armas signed with them? Passage:In 1999, Armas signed for the Maryland Mania in the USL A-League. He began the 2000 season with the Raleigh Capital Express, playing four games. He also spent time with D.C. United. In June 2000, the Columbus Crew signed Armas as a Discovery Player. He played four regular season games with the Crew. He also played on 2000 Open Cup game for the Crew, coming on for John DeBrito in the 66th minute. He also went on loan to MLS Pro 40 for one game. The Crew waived him at the end of the season. In November 2000, the Tampa Bay Mutiny claimed Armas off waivers, but released him before the season. In 2001, John Dugan, who had coached the Express in 2000, became the new head coach of the Atlanta Silverbacks. He promptly signed Armas. On June 12, 2001, half way through the season, the Silverbacks traded Armas to the Minnesota Thunder in a three-way trade which sent Andrew Restrepo from the Rochester Rhinos to Atlanta and Stoian Mladenov to the Rhinos from Minnesota. In 2002, Armas played three games with the Cincinnati Riverhawks. In 2003, he played seventeen games for the Carolina Dynamo, scoring five goals and adding 16 assists as the Dynamo took the league title. Armas was selected as a first team All Star. He then moved to the Pittsburgh Riverhounds for the 2004 USL Second Division season and was back with Carolina for the 2005 season.

[EX A]: a

[EX Q]: 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.

[EX A]: b

[EX Q]: Question: What is the name of the stadium where the team plays that Dumbarton overcame in their first friendly? Passage:June started with striker Mark Stewart having the second year of his contract cancelled. Following this Turnberry Homes signed a new two-year deal to continue as the club's shirt sponsors. Bobby Barr became the club's second signing of the summer, joining on a year long deal from Raith Rovers. Ross Forbes was announced as the club's third summer signing on 11 June - signing a season long deal nine years after a loan spell with the club. A day later the club's top scorer from the 2017–18 season, Calum Gallagher, signed a new one-year deal. The week ended with Grant Adam becoming the club's fourth signing of the summer, joining on a one year deal from Forfar Athletic. His arrival was followed by that of striker Rory Loy, who joined after leaving Falkirk, however Danny Handling turned down a new deal with the club to join Scottish League Two side Edinburgh City. Stuart Carswell was the next player to commit himself for another season, signing a new one-year deal after 54 appearances and two goals in his 18 months at the club. The following week defenders Ross Perry and Cammy Ballantyne signed for the club on year-long deals, and they were joined by Ryan Thomson who joined after leaving Stranraer. A day after signing Thomson marked his debut with a goal, which was added to by strikes from Calum Gallagher and Iain Russell (playing as a trialist) as Dumbarton overcame Lowland League side East Kilbride in their first friendly of the season.

[EX A]:
b