Reduce is related to Take. Take is related to Message. Message is related to Written. Written is related to Essay. 
Set is a type of Bag. you are likely to find Bag in/at/on Supermarket. you are likely to find Corn in/at/on Supermarket. Corn is related to Cattle. 
Reduce <--RelatedTo--> Take <--RelatedTo--> Message <--RelatedTo--> Written <--RelatedTo--> Essay 
Set --IsA--> Bag --AtLocation--> Supermarket <--AtLocation-- Corn <--RelatedTo--> Cattle 