Add punctuation: In 1972 we began exporting sows to Germany Some years later we added weaners to our export portfolio Today we export weaners and pigs and sows for slaughtering
A: In 1972 we began exporting sows to Germany. Some years later, we added weaners to our export portfolio. Today we export weaners, and pigs and sows for slaughtering.

Add punctuation: He studied under Hilbert at Gttingen during 192627
A: He studied under Hilbert at Gottingen during 1926-27.

Add punctuation: I was asked questions like some sort of character test medical testing and stress levels
A:
I was asked questions like some sort of character test, medical testing and stress levels.