An Online Communication System with High Knowledge Reusability Using Structural Annotations
		
		
			
					
		
		
		
			
				Kazuyuki MATSUMOTO
				
				
					Graduate School of Information Science, Nagoya University
				
			
				Katashi NAGAO
				
				
					EcoTopia Science Institute, Nagoya University
				
			
		 
		
		
		
		
		
		
		
		
		
		
		
			
	
	
	
	
	
	
	
	
		
			
		
		
	
		
			
		
		
	
		
			
				
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				5 Summary and Future Work