Please capitalize where necessary: chapters i and ii are concerned with the propositional calculus, discussing tautologies and the decision problem, duality, consistency and completeness, and independence of the axioms and rules of inference.
A: Chapters I and II are concerned with the propositional calculus, discussing tautologies and the decision problem, duality, consistency and completeness, and independence of the axioms and rules of inference.

Q: a privileged guest user in a guest with an amd pcnet ethernet card enabled can potentially use this flaw to execute arbitrary code on the host with the privileges of the hosting qemu process.

A: A privileged guest user in a guest with an AMD PCNet ethernet card enabled can potentially use this flaw to execute arbitrary code on the host with the privileges of the hosting QEMU process.

Q: exercise programmes: 5 , heart rate controlled: 1
A: Exercise programmes: 5 , heart rate controlled: 1

Problem: when the roller is attached behind another implement, an extra long drawbar is available for better manoeuverability.
Can you repeat this sentence, but capitalize it?
Answer: When the roller is attached behind another implement, an extra long drawbar is available for better manoeuverability.

Text: these things i have spoken to you, that in me ye may have peace, in the world ye shall have tribulation, but take courage -- i have overcome the world.'

Correct capitalization: these things I have spoken to you, that in me ye may have peace, in the world ye shall have tribulation, but take courage -- I have overcome the world.'

Q: for instance there is an underage brunello from 1998 at 420 pln.
A:
For instance there is an underage Brunello from 1998 at 420 PLN.