Space is related to Gravity. Gravity is related to Heavy. Heavy is related to Pull. Pull is related to Rabbit. 
Promotion is related to Rank. Rank is related to King. 
Space <--RelatedTo--> Gravity <--RelatedTo--> Heavy <--RelatedTo--> Pull <--RelatedTo--> Rabbit 
Promotion <--RelatedTo--> Rank <--RelatedTo--> King 