Complex sentence: The football department of Beyoğluspor was founded in 1914 under the name Greek Football Team and with the establishment of the Republic of Turkey in 1923 was renamed to "Pera Sports Club" and, later that year, was formally registered as "Beyoğlu Spor Kulübü".
Split into simpler sentences: The football department of Beyoğluspor was founded in 1914 under the name Greek Football Team. With the establishment of the Republic of Turkey in 1923 it was briefly renamed "Pera Sports Club" and, later that year, was formally registered as "Beyoğlu Spor Kulübü".