Please capitalize where necessary: there are different roulette systems, which have been devised over the time of players.
A: There are different roulette systems, which have been devised over the time of players.
Q: supplied with pre-assembled rubber cable and quick connector.

A: Supplied with pre-assembled rubber cable and quick connector.
Q: the next top 10 post will be focusing on trading software.
A: The next top 10 post will be focusing on trading software.
Problem: in this undertaking there was no difference at all between “the free world” and the enslaved world behind “the iron curtain”; on the contrary, there was identity of purpose and synchronization in its execution.
Can you repeat this sentence, but capitalize it?
Answer: In this undertaking there was no difference at all between “the free world” and the enslaved world behind “the Iron Curtain”; on the contrary, there was identity of purpose and synchronization in its execution.
Text: the role of numbers and colour

Correct capitalization: The role of numbers and colour
Text: two double rooms connected by a fully equipped kitchen and bathroom.

Correct capitalization:
Two double rooms connected by a fully equipped kitchen and bathroom.