Why does this return nil for @city?

class Url
  def initialize(city,quary,catagory,minask,maxask)
    @city = city
    @quary = quary
    @cat = catagory
    @min = minask
    @max = maxask
  end

  puts @city

end
a = Url.new('spokane',"tires","pts","0","1000")
a
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