Please capitalize where necessary: sarrià-sant gervasi was the last independent village to be annexed by barcelona, in 1921.
A: Sarrià-Sant Gervasi was the last independent village to be annexed by Barcelona, in 1921.

Please capitalize where necessary: the watch is water resistant to 30 atm and equipped with sapphire glass and quartz movement.
A: The watch is water resistant to 30 ATM and equipped with sapphire glass and quartz movement.

Please capitalize where necessary: you are a little exaggerated?
A: You are a little exaggerated?

Please capitalize where necessary: airshells – protective packaging available to rent at selected airports.
A:
Airshells – protective packaging available to rent at selected airports.