Task: Sentence Expansion
Input (English): He was replaced by General Henry G. Winkelman who decided that in the north the Grebbe Line would be where the battle was to be fought , partly because it would be easier to counterattack .
Output (English): He was replaced by General Henry G. Winkelman who decided that in the north the Grebbe Line would be the main defence line where the decisive battle was to be waged , partly because it would there be easier to break out with a counteroffensive if the conditions were favourable .