Taste is related to Sugar. Sugar is a type of Chemical. Acid is a type of Chemical. 
Depart is related to Go. Go is related to Action. Action is related to Discover. Discover is related to Act. 
Taste <--RelatedTo--> Sugar --IsA--> Chemical <--IsA-- Acid 
Depart <--RelatedTo--> Go <--RelatedTo--> Action <--RelatedTo--> Discover <--RelatedTo--> Act 