Detailed Instructions: In this task, you're given a passage, further information available on a particular linked term from the statement, and an answer term. Your job is to generate a question that can use the information provided to obtain the given answer. You should use the information on both passage and link information to create the question. Note that the answer to the question should be exactly the given answer, and if the answer is none, the answer to the question shouldn't be obtainable from the passage or linked information.
Q: Passage: In 1999 Solaris unveiled its first city bus of the Urbino family the Solaris Urbino 12. The articulated model Solaris Urbino 18 had its debut the same year. In subsequent years the city bus range was broadened, as new models were added, initially these were conventionally fuelled vehicles. In 2002, Solaris presented a new version of the Urbino, the so-called 2nd generation. Two years later, in 2004, the third generation of the Urbino had its premiere. In 2006, at the IAA Nutzfahrzeuge trade fair in Hanover, Solaris Bus & Coach displayed a third generation bus which was also the first of its hybrid models, the Solaris Urbino 18 Hybrid created in collaboration with US firms Alisson Transmission and Cummins. It was the first serially produced hybrid bus in the world. As a result, Solaris joined European leaders of eco-friendly public transport technologies. Krzysztof Olszewski, founder of Solaris Bus & Coach, said at that time that: "Diesel has died, long live electricity!". The first fully electric bus, the Solaris Urbino 8,9 LE electric, was unveiled in 2012. Even though there were no electric vehicles of the Solaris brand before, this particular bus is part of the third generation Urbino family, because it served as the basis for this model. Initially, the range of the vehicle was merely , however, with time, thanks to technological progress, the achievable range increased. The vehicle was tested among others in Poznan, Cracow and Warsaw. The first buyer of that electric Solaris bus was an Austrian operator, from Klagenfurt. Vehicles of that type were also the first electric buses in Poland used by a public transport operator; in 2014, two of these buses made it to the city of Ostroeka. 2012 saw the premiere of the electric city bus Solaris Urbino 12 electric which quickly became a bestseller, whereas its fourth generation version was crowned Bus of the Year 2017.
Link Information: none Answer: none
A:
How many cylinders was the engine of the Urbino 12?