Please capitalize where necessary: the theory of five elements is the basis of all the chinese system of divination, but such theories are found in other mystical teachings about many other nations.
A: The theory of five elements is the basis of all the Chinese system of divination, but such theories are found in other mystical teachings about many other nations.
Q: 1982 – graduated from the oil painting department at china art academy;

A: 1982 – Graduated from the Oil Painting department at China Art Academy;
Q: guide tube: din 2391 chrome-plated steel scr.
A: Guide tube: DIN 2391 Chrome-plated steel SCR.
Problem: go exploring in the world’s largest lego® shop!
Can you repeat this sentence, but capitalize it?
Answer: Go exploring in the world’s largest LEGO® Shop!
Text: rassinier finds it very significant that the figure of six million was not mentioned in court during the eichmann trial. "the prosecution at the jerusalem trial was considerably weakened by its central motif, the six million european jews alleged to have been exterminated in gas chambers.

Correct capitalization: Rassinier finds it very significant that the figure of Six Million was not mentioned in court during the Eichmann trial. "The prosecution at the Jerusalem trial was considerably weakened by its central motif, the six million European Jews alleged to have been exterminated in gas chambers.
Problem: it is easier to visualize a wavelength than a frequency so wavelength will be used in what follows.
Can you repeat this sentence, but capitalize it?
Answer:
It is easier to visualize a wavelength than a frequency so wavelength will be used in what follows.