Pregnancy is related to Test. Test is related to Question. Question is a synonym of Proposal. Presentation is a type of Proposal. 
Voice is related to High. High is related to Reach. 
Pregnancy <--RelatedTo--> Test <--RelatedTo--> Question <--Synonym--> Proposal <--IsA-- Presentation 
Voice <--RelatedTo--> High <--RelatedTo--> Reach 