Score is a type of Gain. Score is a type of Compose. Compose is a type of Constitute. 
Happen is related to Circumstance. Circumstance is a type of Information. Information is related to Notice. 
Gain <--IsA-- Score --IsA--> Compose --IsA--> Constitute 
Happen <--RelatedTo--> Circumstance --IsA--> Information <--RelatedTo--> Notice 