Extract the names of the teams Michael Schumacher was a part of from the text. Separate them with a comma.

Context: Michael Schumacher; born 3 January 1969) is a German former racing driver who competed in Formula One for Jordan, Benetton, Ferrari, and Mercedes. Schumacher has a joint-record seven World Drivers' Championship titles and, at the time of his retirement from the sport in 2012, he held the records for the most wins, pole positions, and podium finishes —which have since been broken by Hamilton—while he maintains the record for the number of total fastest laps, among others.

Answer: Jordan, Benetton, Ferrari, Mercedes