Educational is related to Test. Test is related to Teacher. Teacher is related to Educator. Educator is derived from Educate. 
Dance is related to Exercise. you would Exercise because Fit. Fit is related to Perfect. Perfect is a type of Single. 
Educational <--RelatedTo--> Test <--RelatedTo--> Teacher <--RelatedTo--> Educator --DerivedFrom--> Educate 
Dance <--RelatedTo--> Exercise --MotivatedByGoal--> Fit <--RelatedTo--> Perfect --IsA--> Single 