Visitor is related to Patient. Patient is related to Operation. Operation is a type of Work. Work is a synonym of Function. 
Busy is a different concept from Slow. Slow is related to Put. Put is related to Safe. Safe is related to Protect. 
Visitor <--RelatedTo--> Patient <--RelatedTo--> Operation --IsA--> Work <--Synonym--> Function 
Busy <--DistinctFrom--> Slow <--RelatedTo--> Put <--RelatedTo--> Safe <--RelatedTo--> Protect 