Stuff is related to Blood. Blood is related to Donor. Donor is related to Donation. 
Agriculture is related to Garden. Garden is related to Rock. Rock is related to Concert. Concert is related to Band. 
Stuff <--RelatedTo--> Blood <--RelatedTo--> Donor <--RelatedTo--> Donation 
Agriculture <--RelatedTo--> Garden <--RelatedTo--> Rock <--RelatedTo--> Concert <--RelatedTo--> Band 