In this task, you're given a sentence and your task is to generate a simplified sentence that focuses on lexical paraphrasing from the original sentence given in the input.

the winter solstice occurs at the instant when the sun 's position in the sky is at its greatest angular distance on the other side of the equatorial plane from the observer 's hemisphere.
the winter solstice occurs at the instant when the sun 's position in the sky is at its greatest distance on the other side of the equatorial plane from the observer 's hemisphere.