I want to know the answer to the following question:
What party also had the mayor as of 2015?
All the background I'm provided with is that "As of 2015, Bern's City Council is made up of two representatives of the SP (Social Democratic Party, of whom one is also the mayor), and one each of CVP (Christian Democratic Party), GB (Green Alliance of Berne), and FDP (FDP.The Liberals), giving the left parties a majority of three out of five seats.". Is that enough to answer the question?
Answer: yes