user: QUESTION: Write another turn of this conversation. DIALOG:
What was the leading principle in the history of Walcker Orgelbau?
- Walcker Orgelbau Walcker Orgelbau (also known as E. F. Walcker & Cie.)
- Where is Walcker Orgelbau located?
- of Ludwigsburg, Baden-Württemberg, Germany, is a builder of pipe organs.
- When was Walcker Orgelbau founded?
- It was founded in Cannstatt, a suburb of Stuttgart in 1780 by Johann Eberhard Walcker.
- Who moved the business to Ludwigsburg?
- His son Eberhard Friedrich Walcker moved the business to Ludwigsburg in 1820.
- What is an important fact about Walcker Orgelbau's history?
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ANS: Walcker first became famous for the organ it built in the Paulskirche, Frankfurt, in 1833, which had 74 stops.

QUESTION: Write another turn of this conversation. DIALOG:
What was the Treaty of Bergen about?
- Treaty of Bergen  Treaty of Bergen, signed on 29 August 1450 in Bergen, between Norway and Denmark.
- What did the treaty entail?
- The agreement was in many ways a continuation of the Kalmar Union founded in 1397, between Norway, Denmark and Sweden, while Norway and Denmark had been in a personal union with a common king since 1380.
- Was there any controversy/
- The Bergen Treaty stipulated that Norway and Denmark should belong together forever.
- Are there any other interesting aspects about this article?
- 
ANS: The choice of king was to be made jointly, and the first king elected was Christian I.

QUESTION: Write another turn of this conversation. DIALOG:
What is the source of Lake Balkhash?
- River Ayaguz, which fed the eastern part of the lake until 1950, barely reaches it nowadays.
- What is the length of the lake?
- The annual difference in the flow to the western and eastern parts of the lake is 1.15 km.
- What is the width of the lake?
- The area and volume of the lake vary due to long-term and short-term fluctuations in water level.
- When did the lake form?
- Long-term fluctuations had an amplitude of 12–14 m, which was minimum between the 5th and 10th centuries and maximum between the 13th and 18th centuries.
- How many miles is the lake?
- In the early 20th century and between 1958 and 1969, the area of the lake increased to ~18,000 km, and during the droughts, for example in the late 1900s, 1930s and 1940s, the lake shrank to ~16,000 km with the water level fluctuations of about 3 m.
- What is the maximum depth of the lake?
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ANS: In 1946, the area was 15,730 km and the lake volume was 82.7 km.

QUESTION: Write another turn of this conversation. DIALOG:
What is the Schmeeckle Reserve in Stevens Point, Wisconsin?
- Schmeeckle Reserve (Stevens Point, Wisconsin) Schmeeckle Reserve is a natural land area located on the University of Wisconsin–Stevens Point, in Stevens Point, Wisconsin, United States.
- What is at the reserve?
- It contains hiking trails, natural land area, a visitor center, multiple habitats, abundant wildlife and a manmade lake.
- Is there anything else interesting at the reserve?
- " The Reserve was created to protect and restore native ecological communities, serve as an outdoor classroom for students and teachers, and provide recreational opportunities to all visitors." Before 1956 the current Schmeeckle Reserve was farmland (corn and grain) and grazing (dairy cattle) land.
- Why were they not able to support a large plant population?
- This land, however was not fertile enough to support a large plant population for agriculture due to bedrock close to the surface, making some areas too wet or dry to support crops.
- Is there anything else interesting about the article?
- 
ANS:

assistant: By the 1950s several farmers had abandoned their efforts to make the ground agriculturally productive (abandoned machinery and building foundations are still visible onsite).