sentence2: Yahyaoui spent a period of 18 months behind bars, during which he was tortured, and abused, both physically, and verbally.
sentence1: قضّى زهير فترة امتدت لـ 18 شهرا وراء القضبان تم خلالها تعذيبه واساءة معاملته جسديا ولفظيا.