Complex sentence: In 1974, the revolution of April 25 has modified the management of Metropolitano de Lisboa, in 1975 the company was nationalized and renamed itself in 1978, Metropolitano de Lisboa, EP.
Split into simpler sentences: In 1974, the revolution of April 25 has modified the management of Metropolitano de Lisboa. In 1975 the company was nationalized and in 1978 it was renamed Metropolitano de Lisboa, EP.