Question: In what year was the Population of Eacham 6074 and the population of Atherton was less than 10119?
SQL: SELECT SUM("Year") FROM "2-12555835-1" WHERE "Population (Eacham)" = 6074.0 AND "Population (Atherton)" < 10119.0;

Question: What was the population of Herberton when Mareeba had 17129 people and Eacham had a population smaller than 5609?
SQL: SELECT SUM("Population (Herberton)") FROM "2-12555835-1" WHERE "Population (Mareeba)" = 17129.0 AND "Population (Eacham)" < 5609.0;

Question: What was the sum total of the region after 1976 when Mareeba had population was more than 18212?
SQL: SELECT SUM("Population (Region total)") FROM "2-12555835-1" WHERE "Year" > 1976.0 AND "Population (Mareeba)" > 18212.0;