Stand is related to Corner. Corner is related to Neighborhood. you are likely to find Neighbor in/at/on Neighborhood. Neighbor can be Drunk. 
Sign is related to Wall. you are likely to find Wall in/at/on Classroom. you are likely to find Paper in/at/on Classroom. Paper is related to Constitution. 
Stand <--RelatedTo--> Corner <--RelatedTo--> Neighborhood <--AtLocation-- Neighbor --HasProperty--> Drunk 
Sign <--RelatedTo--> Wall --AtLocation--> Classroom <--AtLocation-- Paper <--RelatedTo--> Constitution 