Agriculture is related to Crop. Crop is related to Farmer. Farmer is related to Straw. 
Dawn is a type of Begin. Dawn is related to Morning. Morning is related to Noon. Noon is a different concept from Midnight. 
Agriculture <--RelatedTo--> Crop <--RelatedTo--> Farmer <--RelatedTo--> Straw 
Begin <--IsA-- Dawn <--RelatedTo--> Morning <--RelatedTo--> Noon <--DistinctFrom--> Midnight 