you are likely to find Understanding in/at/on Family. Family is related to Tree. Tree is related to Monkey. 
Partner is related to Opponent. Opponent is a synonym of Competitor. Competitor is derived from Compete. 
Understanding --AtLocation--> Family <--RelatedTo--> Tree <--RelatedTo--> Monkey 
Partner <--RelatedTo--> Opponent <--Synonym--> Competitor --DerivedFrom--> Compete 