Shadow is related to Projection. Head is a type of Projection. Head can be used for Think. 
Reservation is related to Date. Date is a synonym of Appointment. Appointment is a synonym of Engagement. Engagement is a synonym of Hire. 
Shadow <--RelatedTo--> Projection <--IsA-- Head --UsedFor--> Think 
Reservation <--RelatedTo--> Date <--Synonym--> Appointment <--Synonym--> Engagement <--Synonym--> Hire 