Physical is related to Health. Health is related to Mental. Mental is related to Psychologist. 
Punch is related to Move. Move is related to Swimming. Swimming is related to Stroke. 
Physical <--RelatedTo--> Health <--RelatedTo--> Mental <--RelatedTo--> Psychologist 
Punch <--RelatedTo--> Move <--RelatedTo--> Swimming <--RelatedTo--> Stroke 