Complex sentence: In 1977, Andreou bought a centuries old winery, that he converted to a house, on the island of Aegina after being influenced to buy a house on the island by his long time friend and colleague Nikos Nikolaou.
Split into simpler sentences: In 1977, Andreou bought a centuries old winery on the island of Aegina. He converted it into a house, after being influenced to buy a house on the island by his long time friend and colleague Nikos Nikolaou.