Gang is related to Blood. Blood can be Read. Read is related to Eye. 
Grandchild is the opposite of Grandparent. Grandparent is a type of Animal. Cancer is a type of Animal. 
Gang <--RelatedTo--> Blood --ReceivesAction--> Read <--RelatedTo--> Eye 
Grandchild <--Antonym--> Grandparent --IsA--> Animal <--IsA-- Cancer 