Recruit is related to Term. Term is related to Disease. Disease is related to Example. 
Lesson is related to Swim. Swim is related to Example. Example is related to Country. Country is related to Culture. 
Recruit <--RelatedTo--> Term <--RelatedTo--> Disease <--RelatedTo--> Example 
Lesson <--RelatedTo--> Swim <--RelatedTo--> Example <--RelatedTo--> Country <--RelatedTo--> Culture 