Complex sentence: Guldborgsund is the strait between the Danish islands of Lolland and Falster that connects Smålandsfarvandet in the north with Bay of Mecklenburg in the south.
Split into simpler sentences: Guldborgsund is the strait between the Danish islands of Lolland and Falster. It connects Smålandsfarvandet in the north with the Bay of Mecklenburg in the south.