you are likely to find Trash in/at/on Container. you are likely to find Food in/at/on Trash. you are likely to find Food in/at/on Wedding. 
Progress is a type of Develop. Progress is related to Growth. Growth is related to Plant. 
Container <--AtLocation-- Trash <--AtLocation-- Food --AtLocation--> Wedding 
Develop <--IsA-- Progress <--RelatedTo--> Growth <--RelatedTo--> Plant 