Child is related to Nature. Nature is related to Surrounding. Surrounding is related to Wall. Wall is related to Brick. 
Yard is related to Garden. Garden is related to Outdoor. 
Child <--RelatedTo--> Nature <--RelatedTo--> Surrounding <--RelatedTo--> Wall <--RelatedTo--> Brick 
Yard <--RelatedTo--> Garden <--RelatedTo--> Outdoor 