 Complete the following phrase:  The UAE returned to host the event in 2017 and 2018. 2017 involved the likes of Real Madrid becoming the first team in Club World Cup history to return to the tournament to defend their title. Real Madrid became the first team to successfully defend their title after defeating Grêmio in the Final, all while eliminating Al Jazira in the Semi-Finals. Al-Ain was the first Emirati team to reach the Club World Cup final, as well as the second Asian team to reach the final in the 2018 edition. Real Madrid defeated Al-Ain 41 in the 