Complex sentence: The Greens (EELV) increased from 4 to 10 following the 2011 renewal in which the left took control of the Senate for the first time in the history of the Fifth Republic.
Split into simpler sentences: The Greens (EELV) increased from 4 to 10 following the 2011 renewal. As a result, the left took control of the Senate for the first time in the history of the Fifth Republic.