id	keyword
easat-5998	green
easat-5998	building
easat-5998	south
easat-5998	korea
easat-5998	energy
easat-5998	china
easat-5998	research
easat-5998	development
easat-5998	south korea
easat-5998	economic
easat-5998	saving
easat-5998	countries
easat-5998	evaluation
easat-5998	carbon
easat-5998	systems