Context: The earliest known chemical evidence of barley beer dates to circa 3500–3100 BC from the site of Godin Tepe in the Zagros Mountains of western Iran. Some of the earliest Sumerian writings contain references to beer; examples include a prayer to the goddess Ninkasi, known as "The Hymn to Ninkasi", which served as both a prayer as well as a method of remembering the recipe for beer in a culture with few literate people, and the ancient advice (Fill your belly. Day and night make merry) to Gilgamesh, recorded in the Epic of Gilgamesh, by the ale-wife Siduri may, at least in part, have referred to the consumption of beer. The Ebla tablets, discovered in 1974 in Ebla, Syria, show that beer was produced in the city in 2500 BC. A fermented beverage using rice and fruit was made in China around 7000 BC. Unlike sake, mould was not used to saccharify the rice (amylolytic fermentation); the rice was probably prepared for fermentation by mastication or malting.

Question: When does evidence show the earliest known barley beer was produced?
Answer: circa 3500–3100 BC

Question: In what country was the earliest chemical evidence of barley beer found?
Answer: Iran

Question: What country are the Zargos Mountains located in?
Answer: Iran

Question: What year were the elbow tablet first discovered?
Answer: 1974

Question: What ingredient is used for amylotytic fermentation in sake?
Answer: mould

Question: When does evidence show the earliest known beer was produced?
Answer: Unanswerable

Question: What mountains are located in eastern Iran?
Answer: Unanswerable

Question: What tablets were discovered in Syria in 1970?
Answer: Unanswerable

Question: Sake, made with rice and fruit, was produced in China around which year?
Answer: Unanswerable

Question: Which kind of beer used mould in the process?
Answer: Unanswerable

Question: What dates to circa 3500-1300 BC?
Answer: Unanswerable

Question: What site was the earliest known chemical evidence of barley beer found on in the Iran Mountains? 
Answer: Unanswerable

Question: What did The Hymn to Gilgamesh serve as?
Answer: Unanswerable

Question: What may the Epic of Ninkasi have referred to?
Answer: Unanswerable

Question: What was discovered in 1947?
Answer: Unanswerable