Insight is related to Idea. Suggestion is a type of Idea. 
Prescription is a type of Direction. Direction is related to Voice. Voice is related to Instrument. Instrument is related to Mechanical. 
Insight <--RelatedTo--> Idea <--IsA-- Suggestion 
Prescription --IsA--> Direction <--RelatedTo--> Voice <--RelatedTo--> Instrument <--RelatedTo--> Mechanical 