Please capitalize where necessary: rarely, concerningthe human thought, has a theoretical problem been recognized so clearly - and solved with such a striking acuteness...".
A: Rarely, concerningthe human thought, has a theoretical problem been recognized so clearly - and solved with such a striking acuteness...".

Q: the truth is much bigger, as you could already tell by our theses.

A: The truth is much bigger, as you could already tell by our theses.

Q: confidence. enthusiasm. strong emotions.
A: Confidence. Enthusiasm. Strong emotions.

Problem: retroflash! some of you might still know this game from the c64. here's the flash version of the cult platformer.
Can you repeat this sentence, but capitalize it?
Answer: Retroflash! Some of you might still know this game from the C64. Here's the flash version of the cult platformer.

Text: each topic in the romansh to english audio course provides a clear explanation of a particular aspect of romansh grammar.

Correct capitalization: Each topic in the Romansh to English audio course provides a clear explanation of a particular aspect of Romansh grammar.

Text: duration: 25 - 30 minutes

Correct capitalization:
Duration: 25 - 30 minutes