Premise:
"Although small Armenian, Greek Orthodox, Jewish, and Catholic communities survive, the majority of Istanbullus are Muslim, and adhere to the principles known as the Five Pillars of Islam to believe with all one's heart that There is no God but God, and Mohammed is his Prophet ; to pray five times a day, at dawn, midday, afternoon, sunset, and after dark; to give alms to the poor, and towards the upkeep of the mosques; to fast between sunrise and sunset during the month of Ramadan; and to try to make the pilgrimage to Mecca at least once in one's lifetime." Based on this premise, is the hypothesis "There are at least five different religious groups in Istanbul." true?
yes