In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.

" Burning " ( calcination ) converts them into the highly caustic material " quicklime " ( calcium oxide ) , and , through the addition of water , into the less caustic , but still strongly alkaline " slaked lime " ( calcium hydroxide ) .
" Burning " ( calcination ) of these minerals in a lime kiln converts them into the highly caustic material " burnt lime " , " unslaked lime " or " quicklime " ( calcium oxide ) and , through subsequent addition of water , into the less caustic ( but still strongly alkaline ) " slaked lime " or " hydrated lime " ( calcium hydroxide , Ca ( OH ) ) , the process of which is called " slaking of lime " .

The FIFA Club World Cup is a competition in the sport of Club football .
The FIFA Club World Cup is an international men 's association football competition organised by the " Fe de ration Internationale de Football Association " ( FIFA ) , the sport 's global governing body .

He said that giving up Stalingrad would be a difficult loss , but that it would keep the Sixth Army intact .
He acknowledged the heavy moral sacrifice that giving up Stalingrad would mean , but this would be made easier to bear by conserving the combat power of the Sixth Army and regaining the initiative .