Object is related to Coal. Coal is related to Used. Used is related to Eye. Eye is related to Limb. 
Guest is related to Invitation. Invitation is related to Party. Party is related to Eye. Eye is related to Watch. 
Object <--RelatedTo--> Coal <--RelatedTo--> Used <--RelatedTo--> Eye <--RelatedTo--> Limb 
Guest <--RelatedTo--> Invitation <--RelatedTo--> Party <--RelatedTo--> Eye <--RelatedTo--> Watch 