Voice is related to Pitch. Pitch is related to Field. Field is related to Court. Court is related to Legislative. 
Portray is a type of Represent. Represent is related to Show. Show can be used for Fun. Exercise can be Fun. 
Voice <--RelatedTo--> Pitch <--RelatedTo--> Field <--RelatedTo--> Court <--RelatedTo--> Legislative 
Portray --IsA--> Represent <--RelatedTo--> Show --UsedFor--> Fun <--HasProperty-- Exercise 