Please capitalize where necessary: the sixth-century byzantine masterpiece is currently a museum and during its existence it was changed a few times into a church or a mosque.
A: The sixth-century Byzantine masterpiece is currently a museum and during its existence it was changed a few times into a church or a mosque.

Please capitalize where necessary: conclusions on rio+20 at the envi council on 9 march 2012 (pdf)
A: Conclusions on Rio+20 at the ENVI Council on 9 March 2012 (pdf)

Please capitalize where necessary: * pregnancy and hormones (such as estrogen or birth control pills).
A: * Pregnancy and hormones (such as estrogen or birth control pills).

Please capitalize where necessary: i don’t think i was in complete balance.
A:
I don’t think I was in complete balance.