Complex sentence: Mirza teamed up with Hingis again for the 2016 WTA Finals in Singapore where she was the two time defending champion.However the team lost in the Semi finals to Elena Vesnina and Ekaterina Makarova.
Split into simpler sentences: Mirza teamed up with Hingis again for the 2016 WTA Finals in Singapore, where she was the two-time defending champion. However, the team lost in the semifinals to Elena Vesnina and Ekaterina Makarova.