Complex sentence: Nielsen is a lunar impact crater at the coordinates 31.8 ° N, 51.8 ° W on the Oceanus Procellarum north-east of Montes Agricola on the western hemisphere of the Moon.
Split into simpler sentences: Nielsen is a lunar impact crater on the Oceanus Procellarum. It is located north-east of Montes Agricola on the western hemisphere of the Moon.