Complex sentence: Tribune of Concilium Plebis in 137 BC, put forward and passed the Lex Cassia Tabellaria (a measure to change the voting system to one of secret ballot); 127BC he was Consul with Lucius Cornelius Cinna and in 125 BC he was elected Censor.
Split into simpler sentences: Tribune of Concilium Plebis in 137 BC, put forward and passed the Lex Cassia Tabellaria (a measure to change the voting system to one of secret ballot). In 127 BC he was consul with Lucius Cornelius Cinna and in 125 BC he was elected Censor.