Given the task definition and input, reply with output. 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.

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 .

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 .