Complex sentence: Built at a cost £2.5 million entirely from the donations by British Ahmadi Muslim, the mosque was opened on 7 November 2008 by Mirza Masroor Ahmad, the current and fifth caliph of Ahmadiyya Muslim Community.
Split into simpler sentences: Built at a cost £2.5 million entirely from donations of British Ahmadi Muslim. The mosque was opened on 7 November 2008 by Mirza Masroor Ahmad, the current and fifth caliph of Ahmadiyya Muslim Community.