Fear is related to Factor. Factor is related to Consideration. Exploration is a type of Consideration. 
Bottle is related to Glass. Glass is related to Telescope. Telescope is related to Astronomer. 
Fear <--RelatedTo--> Factor <--RelatedTo--> Consideration <--IsA-- Exploration 
Bottle <--RelatedTo--> Glass <--RelatedTo--> Telescope <--RelatedTo--> Astronomer 