Desperate is related to Need. Organism can Need. Organism is part of Ecosystem. Ecosystem is related to Desert. 
Sir is related to Ceremony. Ceremony is related to Graduation. 
Desperate <--RelatedTo--> Need <--CapableOf-- Organism --PartOf--> Ecosystem <--RelatedTo--> Desert 
Sir <--RelatedTo--> Ceremony <--RelatedTo--> Graduation 