context: Solvay conferences are important international conferences on the development of modern physics. The Solvay Conferences are divided into the Physics Conference and the Chemistry Conference, which are held at different times. The first Solvay conference on chemistry was held eleven years later than the Solvay conference on physics, in 1922. Solvay conferences include speeches, seminars and various discussions. Conferences are traditionally held in Brussels, but nowadays the tradition is not so much respected, conferences have been held in Japan and Greece. The meeting is by invitation only, but sometimes the public can have a free opportunity for people to ask questions. However, such events are separate from the conference itself and are not included in the program content. The conference was started by the Belgian chemist Ernest Solvay in 1911. The most famous conference is the so-called Fifth Physics Solvay Conference, where Albert Einstein and Niels Bohr had a heated discussion on quantum mechanics.
question: What was the first Solvay conference?
answers.text: 1922