user: Classify the below places based on whether they are mountains or river.
Everest, Niles, Hudson, Nanga Parbat

assistant: Everest, Nanga Parbat - Mountains
Niles, Hudson- River

user: Extract the areas of science using differential equations in this text in an alphabetically ordered list.

assistant: <think>
A differential equation is a mathematical equation for an unknown function of one or several variables that relates the values of the function itself and its derivatives of various orders. Differential equations play a prominent role in engineering, physics, economics, biology, and other disciplines.

Differential equations arise in many areas of science and technology, specifically whenever a deterministic relation involving some continuously varying quantities (modelled by functions) and their rates of change in space or time (expressed as derivatives) is known or postulated. This is illustrated in classical mechanics, where the motion of a body is described by its position and velocity as the time value varies. Newton's laws allow one (given the position, velocity, acceleration and various forces acting on the body) to express these variables dynamically as a differential equation for the unknown position of the body as a function of time. In some cases, this differential equation (called an equation of motion) may be solved explicitly.</think>
Here is a list of alphabetically sorted applications of differential equations:
- Biology
- Economics
- Engineering
- Physics

user: Who was Lester Menke

assistant: <think>
Lester D. Menke (December 16, 1918 – March 5, 2016) was a state Representative from the Iowa's 5th and 7th Districts. He served in the Iowa House of Representatives from 1973 to 1985, serving as Speaker pro Tempore from 1981 to 1985. After he served in the Iowa House, Menke served as a liaison between Governor Terry Branstad and the legislature for two years. Menke has a B.A. from Morningside College, where he later served as a member of the board of directors, and attended The University of Iowa College of Law for one year. He worked as a farm owner and for an insurance agency. He served on various school boards and served as president of the Iowa Association of School Boards and State Board of Public Instruction and as director of the National Association of State Boards of Education, as well as serving on the Iowa Educational Radio and Television Facilities Board. Menke received Morningside College's Distinguished Alumni award in 1975.</think>
Lester D. Menke (December 16, 1918 – March 5, 2016) was a state Representative from the Iowa's 5th and 7th Districts. He served in the Iowa House of Representatives from 1973 to 1985, serving as Speaker pro Tempore from 1981 to 1985. 

After he served in the Iowa House, Menke served as a liaison between Governor Terry Branstad and the legislature for two years. Menke has a B.A. from Morningside College, where he later served as a member of the board of directors, and attended The University of Iowa College of Law for one year. He worked as a farm owner and for an insurance agency.

He served on various school boards and served as president of the Iowa Association of School Boards and State Board of Public Instruction and as director of the National Association of State Boards of Education, as well as serving on the Iowa Educational Radio and Television Facilities Board. Menke received Morningside College's Distinguished Alumni award in 1975.