Question: What was the first year of the nissan leaf?

context: The production version was unveiled in August 2009. After receiving 20,000 pre-orders in the United States, Nissan stopped taking reservations in the United States until early 2011. Production in Japan started in October 2010, and 
question: What was the first year of production in Japan of the Nissan Leaf?
short_answers: 2010
context: The production version was unveiled in August 2009. After receiving 20,000 pre-orders in the United States, Nissan stopped taking reservations in the United States until early 2011. Production in Japan started in October 2010, and 
question: What was the first year the production version of the nissan leaf was unveiled?
short_answers: 2009
context: Global sales in 2017 fell to about 47,000 units, in anticipation of the second generation. , the Leaf was available in more than 60 countries in four continents.
question: What was the first year of the nissan leaf second generation?
short_answers: 2017

Answer: The Nissan Leaf has had more than one generation. The Leaf's production version was first unveiled in August 2009, while production of the Leaf in Japan began in October 2010. 2017 was the first year of the battery electric vehicle's second generation.