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: anyone can buy a clamp meter and put their brand on it. only a few manufacturers design, build and test their own equipment to exceed international safety standards.

A: Anyone can buy a clamp meter and put their brand on it. Only a few manufacturers design, build and test their own equipment to exceed international safety standards.
Q: 9:8 though this house is so high, yet shall everyone who passes by it be astonished, and shall hiss; and they shall say, ‘why has yahweh done thus to this land, and to this house?’
A: 9:8 Though this house is so high, yet shall everyone who passes by it be astonished, and shall hiss; and they shall say, ‘Why has Yahweh done thus to this land, and to this house?’
Problem: this monday a new record was set by to players when they played a hand on full tilt poker that will as from now on be known as history’s largest poker pot until a new record is set.
Can you repeat this sentence, but capitalize it?
Answer: This Monday a new record was set by to players when they played a hand on Full Tilt Poker that will as from now on be known as history’s largest poker pot until a new record is set.
Text: looking which airport for osijek?

Correct capitalization: Looking which airport for Osijek?
Q: activity period from 18 september 2015 until 20 september 2015
A:
activity period from 18 September 2015 until 20 September 2015