Possibility is related to Could. Could is related to Able. 
Virus is a type of Species. you are likely to find Virus in/at/on Body. Body is related to Trunk. you are likely to find Radio in/at/on Trunk. 
Possibility <--RelatedTo--> Could <--RelatedTo--> Able 
Species <--IsA-- Virus --AtLocation--> Body <--RelatedTo--> Trunk <--AtLocation-- Radio 