composed of a 3u rack-mountable unit and a dedicated wooden head-cabinet

How would the previous sentence be correctly capitalized?
Answer: Composed of a 3U rack-mountable unit and a dedicated wooden head-cabinet
guests can keep fit with a gym and a fitness centre offered on the premises.

How would the previous sentence be correctly capitalized?
Answer: Guests can keep fit with a gym and a fitness centre offered on the premises.
sapphire crystal, steel bracelet , quartz movement, available in l- , s-size

How would the previous sentence be correctly capitalized?
Answer: Sapphire crystal, steel bracelet , quartz movement, available in L- , S-size
apply with a brush on dry, unwashed hair. the amount must be sufficient to ensure a good coverage of white hair.

How would the previous sentence be correctly capitalized?
Answer: Apply with a brush on dry, unwashed hair. The amount must be sufficient to ensure a good coverage of white hair.