Context: The most impressive and famous of Sumerian buildings are the ziggurats, large layered platforms which supported temples. Sumerian cylinder seals also depict houses built from reeds not unlike those built by the Marsh Arabs of Southern Iraq until as recently as 400 CE. The Sumerians also developed the arch, which enabled them to develop a strong type of dome. They built this by constructing and linking several arches. Sumerian temples and palaces made use of more advanced materials and techniques,[citation needed] such as buttresses, recesses, half columns, and clay nails.

Question: What is the most impressive and famous style of Sumerian buildings?
Answer: the ziggurats

Question: Sumerians also built houses from reeds not very different from ones built by inhabitants in Iraq as recently as when?
Answer: 400 CE

Question: What development by the Sumerians allowed them to make use of domes?
Answer: the arch

Question: How did the Sumerians build their strong domes?
Answer: by constructing and linking several arches

Question: Where were the use of advanced materials and techniques on display in Sumer?
Answer: Sumerian temples and palaces

Question: What are the oldest examples of "Sumerian buildings?
Answer: Unanswerable

Question: What type of seals were made with reeds?
Answer: Unanswerable

Question: What type of house was built until the 4th century CE?
Answer: Unanswerable

Question: Who built reed houses until the 4th century CE?
Answer: Unanswerable