Complex sentence: Hovsep Aznavur (1854, London--June 1935, Cairo) was an Ottoman Armenian architect, notable for his construction plans for the Bulgarian St. Stephen Church of Istanbul, Turkey.
Split into simpler sentences: Hovsep Aznavur (1854, London--June 1935, Cairo) was an Ottoman Armenian architect. He is noted for his construction plans for the Bulgarian St. Stephen Church of Istanbul, Turkey.