Examination is a synonym of Research. Library can be used for Research. you are likely to find Reader in/at/on Library. 
Garden is etymologically related to Yard. you are likely to find Corn in/at/on Garden. Corn is related to Indian. Indian is related to American. 
Examination <--Synonym--> Research <--UsedFor-- Library <--AtLocation-- Reader 
Yard <--EtymologicallyRelatedTo-- Garden <--AtLocation-- Corn <--RelatedTo--> Indian <--RelatedTo--> American 