Walking can be Healthy. Healthy is related to Sound. Sound is related to Accurate. 
you are likely to find Snow in/at/on Roof. Snow is related to Material. Material is related to Soap. 
Walking --HasProperty--> Healthy <--RelatedTo--> Sound <--RelatedTo--> Accurate 
Roof <--AtLocation-- Snow <--RelatedTo--> Material <--RelatedTo--> Soap 