Add punctuation: This ignominious case was set up by Stalin
A: This ignominious "case" was set up by Stalin.

Add punctuation: It was a special case which did not support the general validity of Lamarckism but at the time the role of genetics and mutations was not understood and so Lamarckism appeared to be a defensible theory
A: It was a special case which did not support the general validity of Lamarckism but at the time the role of genetics and mutations was not understood and so Lamarckism appeared to be a defensible theory.

Add punctuation: Purpose of the Service Pack 3 for BERNINA embroidery software V5
A:
Purpose of the Service Pack 3 for BERNINA embroidery software V5: