Observe is related to Study. you are likely to find Study in/at/on Journal. 
Recruit is related to Soldier. Soldier is related to Enemy. Enemy is related to Military. Military is related to Veteran. 
Observe <--RelatedTo--> Study --AtLocation--> Journal 
Recruit <--RelatedTo--> Soldier <--RelatedTo--> Enemy <--RelatedTo--> Military <--RelatedTo--> Veteran 