instruction:
In this task, you're given a context, 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 context 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 context or linked information.
question:
Context: In 1999 Solaris unveiled its first city bus of the Urbino family – the Solaris Urbino 12 Link Information: none Answer: none
answer:
How many cylinders was the engine of the Urbino 12?


question:
Context: the group originally included lead vocalist Keith Relf Link Information: The Yardbirds are an English blues rock band from London. Formed in May 1963, the group originally included lead vocalist Keith Relf Answer: Robert Plant
answer:
Which person was the lead singer of the Yardbirds the longest?


question:
Context: Olympique Lyonnais began their league campaign on the road taking on Le Mans at the Stade Léon-Bollée. Lyon started off the match very slow and eventually allowed a goal that was scored by Modibo Maïga in just the 21st minute. Link Information: Maïga began his career with Stade Malien in his home country aged 15 in 2003 Answer: 2003
answer:

When did the player who scored the first goal in Olympique Lyonnais against  Le Mans begin playing professionally?