Continent is related to Earth. Earth is related to Human. 
Reduce is related to Action. Action is related to Kiss. you would Kiss because Pleasure. Pleasure is related to Joy. 
Continent <--RelatedTo--> Earth <--RelatedTo--> Human 
Reduce <--RelatedTo--> Action <--RelatedTo--> Kiss --MotivatedByGoal--> Pleasure <--RelatedTo--> Joy 