question: this allows the intelligence of windows to decide the correct software application to open your sh3d file.
Capitalize this past sentence correctly.
A: This allows the intelligence of Windows to decide the correct software application to open your SH3D file.

question: originally backgammon are two kinds of it long and short.
Capitalize this past sentence correctly.
A: Originally backgammon are two kinds of it long and short.

question: durg3: average number of benefit claimants by unemployment insurance fund and cause of unemployment (discontinued) (1998m09-2007m05)
Capitalize this past sentence correctly.
A: DURG3: Average number of benefit claimants by unemployment insurance fund and cause of unemployment (DISCONTINUED) (1998M09-2007M05)