Table: city_population
Columns: city_municipality
population_2010
area_km
pop_density_per_km
income_classification

Question: When 318676 is the population of 2010 and 1st class is the income classification what is the area in kilometers squared?
SQL: SELECT "area_km" FROM city_population WHERE "income_classification" = '1st Class' AND "population_2010" = 318676

Question: When itogon, benguet is the city/municipality and 1st class is the income classification how many measurements of population in 2010?
SQL: SELECT COUNT("population_2010") FROM city_population WHERE "income_classification" = '1st Class' AND "city_municipality" = 'Itogon, Benguet'

Question: When 82.74 is the area in kilometers squared what is the pop.density (per km2)?
SQL: SELECT "pop_density_per_km" FROM city_population WHERE "area_km" = '82.74'

Question: When 106 is the area in kilometers squared what is the city/municipality?
SQL: SELECT "city_municipality" FROM city_population WHERE "area_km" = '106'