Tool is related to Needle. Friend can Needle. Friendship is derived from Friend. Friendship can be Important. 
Catch is a synonym of Find. Find is a synonym of Chance. Chance is a synonym of Accident. Accident is a synonym of Casualty. 
Tool <--RelatedTo--> Needle <--CapableOf-- Friend <--DerivedFrom-- Friendship --HasProperty--> Important 
Catch <--Synonym--> Find <--Synonym--> Chance <--Synonym--> Accident <--Synonym--> Casualty 