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

question: please mail your cancellation to semapp@atv-semapp.dk.
Capitalize this past sentence correctly.
A: Please mail your cancellation to semapp@atv-semapp.dk.

question: for instance, i make one persons answerable for my stock.
Capitalize this past sentence correctly.

A: For instance, I make one persons answerable for my stock.