Take the following as truth: The ritual dismantling of the shrines every 20 years (known as sengu-shiki) goes back to prehistoric times, when sacred structures tended to be erected for special ceremonies rather than as permanent places of worship.
Then the following statement: "Prehistoric sacred structures were often build specifically for special ceremonies, then dismantled after the rituals were complete. " is true, false, or inconclusive?
Answer: True