Complex sentence: He was born in Barcelona, Catalonia (Spain) in 1928 and was (with Jaime Gil de Biedma) one of the greatest poets of the so-called "generation of the 50 ´ s".
Split into simpler sentences: He was born in Barcelona, Catalonia (Spain) in 1928. And was (with Jaime Gil de Biedma) one of the greatest poets of the so-called "generation of the 50 ´ s".