you are likely to find Phone in/at/on Desk. you are likely to find Report in/at/on Desk. 
Sheet is a synonym of Blanket. Throw is a type of Blanket. Throw is related to Pitcher. Pitcher is derived from Pitch. 
Phone --AtLocation--> Desk <--AtLocation-- Report 
Sheet <--Synonym--> Blanket <--IsA-- Throw <--RelatedTo--> Pitcher --DerivedFrom--> Pitch 