instruction:
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.
question:
Ca-Al-rich inclusions – the oldest known solid bits in meteorites formed within the solar system – are 4.567 billion years old .
answer:
Calcium – aluminium-rich inclusions — the oldest known solid constituents within meteorites that are formed within the Solar System — are 4.567 billion years old , giving a lower limit for the age of the Solar System .


question:
A winch is a mechanical device that is used to adjust how tight a piece of rope is .
answer:
A winch is a mechanical device that is used to pull in ( wind up ) or let out ( wind out ) or otherwise adjust the tension of a rope or wire rope ( also called " cable " or " wire cable " ) .


question:
In August 1963 , King spoke of President Lincoln and his well-known words : " Five score years ago , a great American , in whose symbolic shadow we stand today , signed the Emancipation Proclamation .
answer:

Standing on the steps of the Lincoln Memorial in August 1963 , King began with a reference , by the style of his opening phrase , to President Lincoln and his enduring words : " Five score years ago , a great American , in whose symbolic shadow we stand today , signed the Emancipation Proclamation .