Master is a type of Employer. Master is related to Boss. Boss is related to Bishop. Bishop is part of Council. 
Writing is related to Tool. Tool is related to Machine. Machine is related to Operator. 
Employer <--IsA-- Master <--RelatedTo--> Boss <--RelatedTo--> Bishop --PartOf--> Council 
Writing <--RelatedTo--> Tool <--RelatedTo--> Machine <--RelatedTo--> Operator 