Question: What was the population of a county in 1960 that had a population of 467052 in 2000 and 78812 in 2040?
SQL: SELECT AVG("Population (1960)") FROM "2-1064198-2" WHERE "Population (2000)" > 467052.0 AND "Population (2040)" = 78812.0;

Question: What was the population of a county in 2040 that had a population less than 108172 in 2000 and less than 107589 in 1960?
SQL: SELECT COUNT("Population (2040)") FROM "2-1064198-2" WHERE "Population (1960)" < 108172.0 AND "Population (2000)" < 107589.0;

Question: What was oslo's population in 1960, with a population of 507467 in 2000?
SQL: SELECT AVG("Population (1960)") FROM "2-1064198-2" WHERE "County" = 'oslo' AND "Population (2000)" > 507467.0;