In this task, we ask you to rewrite a sentence in simple English without changing its general meaning. Essentially, you want to make the sentence easier to read by using simpler words, utilizing more straightforward sentence structures, and omitting non-essential information etc.

Q: It consists of a bulb containing mercury attached to a glass tube of narrow diameter ; the volume of mercury in the tube is much less than the volume in the bulb .

A: The volume of mercury in the tube is much less than the volume in the bulb .
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Q: In Norse mythology ( a subset of Germanic mythology ) , Elli ( Old Norse " old age " ) is a personification of old age who , in the " Prose Edda " book " Gylfaginning " , defeats Thor in a wrestling match .

A: In the " Prose Edda " book " Gylfaginning " , Elli defeats Thor in a wrestling match .
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Q: " 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 " .

A:
" 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 ) .
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