Please capitalize where necessary: previous: running on the beach in barcelona
A: Previous: Running on the beach in Barcelona

Please capitalize where necessary: in the case that your ax file doesn't open, it is highly likely that you do not have the correct software application installed on your pc to view or edit ax file extensions.
A: In the case that your AX file doesn't open, it is highly likely that you do not have the correct software application installed on your PC to view or edit AX file extensions.

Please capitalize where necessary: meranti shorea species may be sensitising
A: Meranti Shorea species May be sensitising

Please capitalize where necessary: the military hotel at the corner of st. isaac’s square was picketed by armed sailors.
A:
The Military Hotel at the corner of St. Isaac’s Square was picketed by armed sailors.