In this part of the session, the facilitator divides participants into three small groups and poses a focused question: “What is the greatest source of air pollution in Eleusis?” The facilitator then assigns each group the task of discussing the issue in detail and bringing back 2–3 concrete factors that cause or are linked to air pollution. At first, all the participants - almost simultaneously - responded the refineries. In the discussion that followed, however, every group chose a different source of air pollution.