Equation is a synonym of Equality. Person wants (to) Equality. Bull is a type of Person. Bull is a synonym of Cat. 
Maximum is related to Limit. Limit is a synonym of Limitation. Limitation is a synonym of Prescription. 
Equation <--Synonym--> Equality <--Desires-- Person <--IsA-- Bull <--Synonym--> Cat 
Maximum <--RelatedTo--> Limit <--Synonym--> Limitation <--Synonym--> Prescription 