Text: one thing is certain.

Correct capitalization: One thing is certain.

Text: tunisia, tunisia holidays | frond photo, frond - grren photo

Correct capitalization: Tunisia, Tunisia holidays | frond photo, frond - grren photo

Text: details about an individual for jens christian nielsen

Correct capitalization: Details about an individual for Jens Christian Nielsen

Text: this text about hakan sukur was written by adem dogan who is a member of galatasaray's fan club ultraslan.

Correct capitalization:
This text about Hakan Sukur was written by Adem Dogan who is a member of Galatasaray's fan club Ultraslan.