you are likely to find Classroom in/at/on University. you are likely to find Science in/at/on University. 
Summer is related to Ms. Ms is etymologically related to Mrs. Mrs is related to Title. Title is related to Merchant. 
Classroom --AtLocation--> University <--AtLocation-- Science 
Summer <--RelatedTo--> Ms --EtymologicallyRelatedTo--> Mrs <--RelatedTo--> Title <--RelatedTo--> Merchant 