class A 
	def initialize(attr1) 
		@attr1 = attr1
	end
	def initialize(attr1, attr2) 
		@attr1 = attr1
		@attr2 = attr2
	end
	def tell()
		puts @attr1
	end	
end

class B < A 
	def tell(blah)
		puts "blah"
	end	
end

b = B.new("a", "b")
b.tell()