Complex sentence: In Arab countries ululation is commonly used by women to express celebration, especially at weddings and also in funerals of martyrs in the Muslim world, since they are believed to be going to Jannah.
Split into simpler sentences: In Arab countries ululation is commonly used by women to express celebration, especially at weddings. Ululation is also commonly used in funerals of martyrs in the Muslim world, since they are believed to be going to Jannah.