you are likely to find Earth in/at/on Orbit. Earth is related to Nature. 
Murder is related to Motive. Motive is a synonym of Motivation. Motivation is a synonym of Need. Need is related to Depend. 
Orbit <--AtLocation-- Earth <--RelatedTo--> Nature 
Murder <--RelatedTo--> Motive <--Synonym--> Motivation <--Synonym--> Need <--RelatedTo--> Depend 