it is helpful for determining if an event (respiratory or limb movement) disrupts the level of sleep.

How would the previous sentence be correctly capitalized?
Answer: It is helpful for determining if an event (respiratory or limb movement) disrupts the level of sleep.
before buying a lawn mower oleo-mac g 48 pe ask all your options, equipment, appearance and warranty from the seller. please note that we are not engaged in the sale and manufacture warranty.

How would the previous sentence be correctly capitalized?
Answer: Before buying a lawn mower Oleo-Mac G 48 PE ask all your options, equipment, appearance and warranty from the seller. Please note that we are not engaged in the sale and manufacture warranty.
the driver can operate the various functions of the single-action cylinder with a cord from the tractor cab.

How would the previous sentence be correctly capitalized?
Answer: The driver can operate the various functions of the single-action cylinder with a cord from the tractor cab.
the year gives us reason to reflect on the fact that the europeans live longer than ever before and, at the same time, consider how to get the most of out of the extra years of life.

How would the previous sentence be correctly capitalized?
Answer: The Year gives us reason to reflect on the fact that the Europeans live longer than ever before and, at the same time, consider how to get the most of out of the extra years of life.