Complex sentence: Yusra Mardini (born March 5th 1998) is a Syrian swimmer, who now resides in Berlin, Germany, and representing a small team of Refugee Olympic Athletes (ROT) under the Olympic flag, at the 2016 Summer Olympics in Rio de Janeiro.
Split into simpler sentences: Yusra Mardini (born March 5th 1998) is a Syrian swimmer, who now resides in Berlin, Germany. She is a member of the Refugee Olympic Athletes Team (ROT), competing under the Olympic flag at the 2016 Summer Olympics in Rio de Janeiro.