Soil is related to Garden. you are likely to find Snake in/at/on Garden. you are likely to find Snake in/at/on Earth. 
Enforce is a synonym of Nerve. you are likely to find Nerve in/at/on Animal. Cancer is a type of Animal. Cancer is related to Smoke. 
Soil <--RelatedTo--> Garden <--AtLocation-- Snake --AtLocation--> Earth 
Enforce <--Synonym--> Nerve --AtLocation--> Animal <--IsA-- Cancer <--RelatedTo--> Smoke 