Here's a short story:

The city's name was historically written as 那古野 or 名護屋 (both read as "Nagoya"). One possible origin is the adjective , meaning 'peaceful'. 

The name Chūkyō (中京, consisting of "chū" (middle) + "kyō" (capital)) is also used to refer to Nagoya. Notable examples of the use of the name Chūkyō include the Chūkyō Industrial Area, Chūkyō Metropolitan Area, Chūkyō Television Broadcasting, Chukyo University and the Chukyo Racecourse. 

Oda Nobunaga and his protégés Toyotomi Hideyoshi and Tokugawa Ieyasu were powerful warlords based in the Nagoya area who gradually succeeded in unifying Japan. In 1610, Tokugawa Ieyasu moved the capital of Owari Province from Kiyosu, about seven kilometers () away, to a more strategic location in present-day Nagoya. 

During this period Nagoya Castle was constructed, built partly from materials taken from Kiyosu Castle. During the construction, the entire town around Kiyosu Castle, consisting of around 60,000 people, moved from Kiyosu to the newly planned town around Nagoya Castle. Around the same time, the nearby ancient Atsuta Shrine was designated as a , called Miya (the Shrine), on the important Tōkaidō road, which linked the two capitals of Kyoto and Edo (now Tokyo). A town developed around the temple to support travelers. The castle and shrine towns formed the city. (End of story)

Provide your best guess for the following question. Give ONLY the guess, no other words or explanation.

For example:

Guess: <most likely guess, as short as possible; not a complete sentence, just the guess!>

Here are a few examples of questions and answers:

Question: Does the city of Nagoya have another name?
Guess: yes

Question: What is it?
Guess: Chūkyō

Question: What does that mean in Japanese?
Guess: "chū" (middle) + "kyō" (capital)

Question: Were there warlords in the area?
Guess: yes

Question: Name one of them.
Guess: Oda Nobunaga

Question: Name another, please.
Guess: Toyotomi Hideyoshi

Question: What was their goal for the country?
Guess: unifying Japan

Question: Was Nagoya always the capital of its province?
Guess: no

Question: Since when has it been?
Guess: 1610

Question: Who made that happen?
Guess: Tokugawa Ieyasu

Question: When?
Guess: 1610

Question: What was the old capital?
Guess: Kiyosu

Question: How far away is it from Nagoya?
Guess: about seven kilometers

Question: What's the advantage of where the new capital is?
Guess: it is a more strategic location

Question: Did any important buildings go up around the time of the move?
Guess: Nagoya Castle

Now answer the following question in the same format.

Question: Where did they get the stuff to build it?

Kiyosu Castle