Building is related to Sand. Sand is related to Soft. Soft is related to Lip. 
Encouraging is related to Helpful. Helpful is related to Hand. Hand is related to Part. 
Building <--RelatedTo--> Sand <--RelatedTo--> Soft <--RelatedTo--> Lip 
Encouraging <--RelatedTo--> Helpful <--RelatedTo--> Hand <--RelatedTo--> Part 