Component is related to Oxygen. Tree can be used for Oxygen. Tree can be used for Refuge. 
you are likely to find Grass in/at/on Garden. Grass is related to Neighbor. Neighbor is a type of Object. Catch is a type of Object. 
Component <--RelatedTo--> Oxygen <--UsedFor-- Tree --UsedFor--> Refuge 
Garden <--AtLocation-- Grass <--RelatedTo--> Neighbor --IsA--> Object <--IsA-- Catch 