Hay is a synonym of Sack. Sack is a synonym of Fire. Fire is a type of Burning. 
Training is related to Discipline. Discipline is related to Art. Art is related to Release. Sacrifice is a type of Release. 
Hay <--Synonym--> Sack <--Synonym--> Fire --IsA--> Burning 
Training <--RelatedTo--> Discipline <--RelatedTo--> Art <--RelatedTo--> Release <--IsA-- Sacrifice 