each room comes with a 22” lcd tv with satellite and pay-per-view channels.

How would the previous sentence be correctly capitalized?
Answer: Each room comes with a 22” LCD TV with satellite and pay-per-view channels.
if the bridge shows, porcelain is then bonded to the base. sometimes, there are also other non-precious metals used in the base of the bridge for strength.

How would the previous sentence be correctly capitalized?
Answer: If the bridge shows, porcelain is then bonded to the base. Sometimes, there are also other non-precious metals used in the base of the bridge for strength.
lottery date: thursday 25 february 2016

How would the previous sentence be correctly capitalized?
Answer: Lottery date: Thursday 25 February 2016
the concentration of greenhouse gases can make the atmosphere essentially opaque in a particular band.

How would the previous sentence be correctly capitalized?
Answer: The concentration of greenhouse gases can make the atmosphere essentially opaque in a particular band.