you are likely to find Factory in/at/on City. you are likely to find Museum in/at/on City. you are likely to find Wagon in/at/on Museum. Wagon is related to Trailer. 
Interrupt is a type of End. Complete is a type of End. 
Factory --AtLocation--> City <--AtLocation-- Museum <--AtLocation-- Wagon <--RelatedTo--> Trailer 
Interrupt --IsA--> End <--IsA-- Complete 