Food is related to Ankle. Ankle is related to Walking. 
Refuge is a type of Shelter. Shelter is a type of Housing. Housing is related to Property. Property is a type of Concept. 
Food <--RelatedTo--> Ankle <--RelatedTo--> Walking 
Refuge --IsA--> Shelter --IsA--> Housing <--RelatedTo--> Property --IsA--> Concept 