id	keyword
asop-2961	nature
asop-2961	environment
asop-2961	world
asop-2961	human
asop-2961	earth
asop-2961	adaptability
asop-2961	oil
asop-2961	history
asop-2961	resources
asop-2961	place
asop-2961	libraries
asop-2961	institutions