Guarantee is related to Promise. Promise is related to Engagement. 
Visitor is derived from Visit. Visit is related to Space. Space is a type of Attribute. Attribute is related to Skill. 
Guarantee <--RelatedTo--> Promise <--RelatedTo--> Engagement 
Visitor --DerivedFrom--> Visit <--RelatedTo--> Space --IsA--> Attribute <--RelatedTo--> Skill 