sentence2: Ex-political prisoner Sameera Al-Khalil, lawyer and human rights defender Razan Zaitouneh, her husband, engineer and activist Wael Hamadeh, and lawyer and poet Nazem Al Hamadi, went missing in Douma, Syria, in December 2013.
sentence1: ليُنشِئوا، سويًا ربما، تيارًا للدفاع عن ضحايا الاختفاء القسري.