Show is a synonym of Testify. Testify is a synonym of Witness. Witness is related to Information. Circumstance is a type of Information. 
Tourist is the opposite of Resident. Resident is a synonym of Citizen. Citizenship is derived from Citizen. 
Show <--Synonym--> Testify <--Synonym--> Witness <--RelatedTo--> Information <--IsA-- Circumstance 
Tourist <--Antonym--> Resident <--Synonym--> Citizen <--DerivedFrom-- Citizenship 