Branch is related to Arm. Arm is related to Like. Like is related to Care. Care is related to Mind. 
Aggression is related to Psychology. Psychology is a type of Science. Science is related to Medicine. 
Branch <--RelatedTo--> Arm <--RelatedTo--> Like <--RelatedTo--> Care <--RelatedTo--> Mind 
Aggression <--RelatedTo--> Psychology --IsA--> Science <--RelatedTo--> Medicine 