Complex sentence: The stacks depicted in the series are commonly referred to in English as hay, wheat or grain-stacks though in reality they stored sheafs of grain for bread-so wheat (or possibly barley or oats)-and certainly not hay, an animal food.
Split into simpler sentences: The stacks depicted in the series are commonly referred to in English as hay, wheat or grain-stacks. In reality they stored sheafs of grain for bread-so wheat (or possibly barley or oats)-and certainly not hay, an animal food.