input: The four sites were selected because they have different types of metal contamination
fixed: The four sites were selected because they have different types of metal contamination.

input: What happens is that while watching videos you might unintentionally delete the video files
fixed: What happens is that while watching videos you might unintentionally delete the video files.

input: Many things that need to be transported in industrial or commercial operation can be moved by a Weidemann machine especially on uneven terrain
fixed: Many things that need to be transported in industrial or commercial operation can be moved by a Weidemann machine, especially on uneven terrain.

input: One knows that the mere fact of unification is satisfying to the workers but it is a mistake to believe that this momentary success is not bought too dearly
fixed:
One knows that the mere fact of unification is satisfying to the workers, but it is a mistake to believe that this momentary success is not bought too dearly.