Roof is related to Cottage. Cottage is related to Living. Living is related to Camp. Camp is related to Escape. 
Sensitivity is a type of Ability. Ability is related to Nose. Bridge is part of Nose. 
Roof <--RelatedTo--> Cottage <--RelatedTo--> Living <--RelatedTo--> Camp <--RelatedTo--> Escape 
Sensitivity --IsA--> Ability <--RelatedTo--> Nose <--PartOf-- Bridge 