Electronics is a type of Physics. you are likely to find Physics in/at/on University. you are likely to find Tree in/at/on University. you are likely to find Shelter in/at/on Tree. 
Like is related to Stumble. 
Electronics --IsA--> Physics --AtLocation--> University <--AtLocation-- Tree <--AtLocation-- Shelter 
Like <--RelatedTo--> Stumble 