Producer is related to Factory. you are likely to find Material in/at/on Factory. Material is similar to Physical. Physical is related to Physician. 
Temporary is related to Permanent. Permanent is related to Stable. Stable is related to Bread. 
Producer <--RelatedTo--> Factory <--AtLocation-- Material <--SimilarTo--> Physical <--RelatedTo--> Physician 
Temporary <--RelatedTo--> Permanent <--RelatedTo--> Stable <--RelatedTo--> Bread 